Mobile station apparatus and base station apparatus

ABSTRACT

A mobile station apparatus transmits capability information including at least indicator selected from a plurality of indicators that each define at least a combination of first information associated with an aggregated frequency bandwidth of one or more component carriers and second information associated with the quantity of component carriers included in the one or more component carriers. A base station apparatus includes a controller that allocates to a mobile station apparatus one or a plurality of component carriers to be used for communication based on a radio resource control (RRC) message received from the mobile station apparatus. The RRC message includes mobile station apparatus capability information including at least one indicator selected from the plurality of indicators.

This application is a Continuation of co-pending application Ser. No.15/617,863 filed on Jun. 8, 2017 which is a Continuation of applicationSer. No. 14/142,589 filed on Dec. 27, 2013 (now U.S. Pat. No. 9,699,770issued Jul. 4, 2017). application Ser. No. 14/142,589 is a Division ofco-pending application Ser. No. 13/454,707 filed on Apr. 24, 2012 (nowU.S. Pat. No. 8,824,403 issued Sep. 2, 2014). application Ser. No.13/454,707 is a Continuation of PCT International Application No.PCT/JP2010/068474 filed on Oct. 20, 2010, which claims priority ofApplication No. 2009-245493 filed in Japan on Oct. 26, 2009, all ofwhich are hereby expressly incorporated by reference into the presentapplication.

TECHNICAL FIELD

The present invention relates to a mobile station apparatus and a basestation apparatus.

BACKGROUND ART

3GPP (3rd Generation Partnership Project) is a standardization projectthat considers and generates specifications of cellular mobilecommunication systems based on networks advanced from GSM (Global Systemfor Mobile Communications) and W-CDMA (Wideband-Code Division MultipleAccess). The W-CDMA has been standardized by the 3GPP as a thirdgeneration cellular mobile communication method, and services thereofhave been provided sequentially. Additionally, HSPA (High-Speed PacketAccess) with the higher communication speed has also been standardized,and services thereof have been provided. EUTRA (Evolved UniversalTerrestrial Radio Access), which is an evolved version of the thirdgeneration radio access technology, has been considered by the 3GPP, andthe Release 8 specification has been completed at the end of 2008.Further, consideration of Advanced EUTRA (also referred to asLTE-Advanced or LTE-A), which is an advanced version of the EUTRA is inprogress (Non-Patent Document 1).

For the LTE-A, carrier aggregation (hereinafter referred to as CA)technology has been proposed as data transmission technology whichmaintains the compatibility with the EUTRA and achieves the speed thatis equal to or greater than that of IMT-Advanced (4G) (for example,Non-Patent Document 2). The CA technology is such technology that amobile station apparatus simultaneously receives signals transmittedfrom a base station apparatus, using continuous or non-continuousdownlink component carriers (hereinafter referred to as CC) each havinga small frequency bandwidth (for example, 20 MHz bandwidth), andgenerates a pseudo carrier signal having a large frequency bandwidth(for example, 100 MHz bandwidth of five CCs), thereby achievinghigh-speed downlink data transmission. Similarly, according to the CAtechnology, the base station apparatus simultaneously receives CCsignals transmitted from the mobile station apparatus, using continuousor non-continuous uplink component carriers each having a smallfrequency bandwidth (for example, 20 MHz bandwidth), and generates apseudo carrier signal having a large frequency bandwidth (for example,40 MHz bandwidth of two CCs), thereby achieving high-speed uplink datatransmission.

(Relationship Between Introduction of CA Technology and Combination ofMobile Station Apparatus Configuration)

A combination of CCs for the CA technology depends on variousparameters, such as the total number of uplink CCs (for example, two),the total number of downlink CCs (for example, five), the number offrequency bands (for example, three frequency bands, which are 700 MHzband, 2 GHz band, and 3 GHz band), continuous or non-continuous CCs,transmission modes (for example, FDD, TDD), and the like.

FIG. 34 is a schematic diagram illustrating an aggregation of CCsaccording to related art. In FIG. 34, a horizontal axis denotesfrequency. Additionally, FIG. 34 shows a case where there are twofrequency bands, which are a frequency band 1 (2 GHz band) and afrequency band 2 (3 GHz band). Further, FIG. 34 shows cases 1 to 6separated in the vertical direction. The cases 1 to 3 show cases of aFDD (Frequency Division Duplex) transmission mode. The cases 4 to 6 showcases of a TDD (Time Division Duplex) transmission mode.

In FIG. 34, the case 1 shows an aggregation of CCs where threecontinuous CCs (center frequencies f1_R1, f1_R2, and f1_R3) are selectedin a band 12 (downlink) included in the frequency band 1, and twocontinuous CCs (center frequencies f1_T1 and f1_T2) are selected in aband 11 (uplink) included in the same frequency band 1.

The case 2 shows an aggregation of CCs where two non-continuous CCs(center frequencies f1_R1 and f1_R3; Intra CA case) are selected in theband 12 included in the frequency band 1, and two non-continuous CCs(center frequencies f1_T1 and f1_T3) are selected in the band 11included in the same frequency band 1.

The case 3 shows an aggregation of CCs where a CC (center frequencyf1_R1) is selected in the band 12 included in the frequency band 1, a CC(center frequency f2_R1) is selected in the band 22 included in thefrequency band 2, and a CC (center frequency f1_T1) is selected in theband 11 included in the frequency band 1. The case 3 shows that twonon-continuous CCs (Inter CA case) for downlink communication areselected from different frequency bands 1 and 2, and one CC is selectedfor uplink communication.

The cases 4, 5, and 6 are associated with the cases 1, 2, and 3,respectively. For example, the case 4 shows an aggregation of CCs wherethe band 12 is used for downlink/uplink communication, and CCs areselected according to time bands. The case 4 shows an aggregation of CCswhere three continuous CCs (center frequencies f1_2, and f1_3) areselected in the band 12 for downlink communication, and two continuousCCs (center frequencies and f1_2) are selected in the band 12 for uplinkcommunication.

Additionally, regarding non-continuous CCs in the same frequency band(for example, the center frequencies f1_R1 and f1_R3 shown in FIG. 34),there are three following cases: a case where multiple base stationstransmit transmission signals while synchronizing timings of frames orthe like (referred to as inter-base station apparatus synchronization);a non-synchronized case where each base station apparatus transmits atransmission signal independently; and a case where a channel delayoccurs even if inter-base station apparatus synchronization isperformed, such as when timing difference occurs among frames of OFDM(Orthogonal Frequency Division Multiplexing) signals, thereby causingnon-synchronization.

Further, regarding transmission by a base station apparatus usingcontinuous CCs (for example, the center frequencies f1_R1 and f1_R2) inthe same frequency band, various technologies have been proposed inconsideration of elements, such as the backward compatibility with theLTE system, the radio channel raster of 100 kHz UMTS (Universal MobileTelecommunications System), a guard band between two adjacent CCs, guardbands on both ends of continuous CCs, or frequency use efficiency (forexample, Non-Patent Document 1). In the case of continuous CCs, however,the length of a guard band between two adjacent CCs is not the integermultiple of the 15 kHz subcarrier bandwidth. For this reason, aseparated baseband processing circuit is required in a transmission andreception circuit in order to maintain the compatibility with the LTEsystem.

To cope with the above various situations, the configuration of themobile station apparatus depends on the following elements: (a) thenumber of frequency bands; (b) the total number of downlink/uplink CCs;(c) continuous/non-continuous (Intra CA/Inter CA) CCs; (d) radiotransmission modes; (e) inter-downlink CC or inter-base stationapparatus synchronous/asynchronous transmission; (f) various CCbandwidths (for example, 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, or 20MHz); (g) the bandwidth of multiple continuous CCs each having 15 kHzOFDM subcarrier bandwidth (for example, 100 MHz); and the like (forexample, Non-Patent Documents 2 and 3).

(Relationship Between Another Introduced LTE-A Technology andCombination of Mobile Station Apparatus Configurations)

As requirement conditions for the LTE-A (Non-Patent Document 4), thedata transmission speeds of 100 Mbps for downlink and 75 Mbps for uplinkare required while a mobile station apparatus moves at the high speed.While the mobile station apparatus moves at the fixed speed, the datatransmission speeds of 1000 Mbps for downlink and 500 Mbps for uplinkare required. To achieve these transmission speeds, the high order MIMOtechnology is introduced other than the introduction of the CAtechnology. For example, downlink 8.times.8 MIMO (the number oftransmission antennas of the base station apparatus is 8, and the numberof reception antennas of the mobile station apparatus is 8) can achievethe data transmission speed of 1000 Mbps in the 100 MHz transmissionband. Uplink 4.times.4 MIMO can achieve the data transmission speed of600 Mbps in the 40 MHz transmission band. Additionally, CoMP(coordinated multipoint) technology for communication between basestation apparatuses and uplink transmission diversity technology areintroduced in order to enlarge the data transmission speed of a celledge or to enlarge the cell coverage area.

Therefore, the configuration of the mobile station apparatus alsodepends on the following elements: (h) downlink/uplink MIMO methods; (i)methods of CoMP communication between base station apparatuses; (j)uplink transmission diversity methods; and the like.

(Relationship Between Carrier Operation State and Combination of MobileStation Apparatus Configurations)

Frequency assignment for the IMT-Advanced has been determined at theworld radio communication conference 2007 (WRC-07). However, all of thecurrent IMT bands (Non-Patent Documents 4 and 5) are not common to eachcountry. Each mobile telephone service provider uses the frequenciesindividually assigned to the country of the provider. According to thestate of frequency assignment to each country, the mobile telephoneservice providers use different transmission modes (TDD, FDD).Additionally, the integration of different transmission modes (forexample, mixture of different transmission modes between a macrocell anda microcell, between an in-door area and an out-door area, or between acell neighborhood and a cell edge) has been proposed. Therefore, theconfiguration of the mobile station apparatus is more complicated infurther consideration of the following elements: (k) the state offrequency assignment to each mobile telephone service provider; and (l)domestic/international roaming (Non-Patent Documents 6, 7, and 8).

The above elements of (a) to (1) have not caused significant effect onthe configuration of the mobile station apparatus in the mobilecommunication system of the related art. For example, regarding the LTEsystem, categories of the mobile station apparatus (UE categories; 5types) can be defined by the buffer size of data processing software ofthe mobile station apparatus (maximum downlink data speed of 10 Mbps to300 Mbps) and the maximum MIMO configuration (1×1, 2×2, 4×4). Once thiscategory is determined, the configuration of the mobile stationapparatus can be fixed. In other words, five types of mobile stationapparatuses may be provided to each mobile telephone service provider.Additionally, five types of mobile station apparatuses may bedistributed in the market.

CITATION LIST Non-Patent Documents

-   [Non-Patent Document 1] NTT DoCoMo, INC. R1-083015, 3GPP TSG-RAN1    Meeting #54bis, Jeju, Korea 18-22, Aug., 2008-   [Non-Patent Document 2] Motorola, R1-083828, 3GPP TSG-RAN1 Meeting    #53bis, Prague, Czech Republic, Sep. 29-Oct. 3, 2008-   [Non-Patent Document 3] LG Electronics, R1-082946, 3GPP TSG-RAN1    Meeting #54bis, Jeju, Korea 18-22, Aug., 2008-   [Non-Patent Document 4] 3GPP TR36.913, Requirements for Further    Advancements for E-UTRA-   [Non-Patent Document 5] 3GPP TS 36.101, User Equipment (UE) radio    transmission and reception-   [Non-Patent Document 6] NTT DoCoMo, T-Mobile Intl., CMCC, Orange,    Vodafone, Telecom Italia, R4-091011, 3GPP TSG-RAN WG4 Meeting #50,    Athens, Greece, Feb. 9-13, 2009-   [Non-Patent Document 7] Ericsson, R4-090594, 3GPP TSG-RAN WG4    Meeting #50, Athens, Greece, Feb. 9-13, 2009-   [Non-Patent Document 8] Nokia, R4-091204, 3GPP TSG-RAN WG4 Meeting    #50bis, Seoul, South Korea, 23-27 Mar. 2009

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention

As explained above, the mobile station apparatus and the base stationapparatus in the LTE-A communication system communicate with each otherusing one or more CCs (component carriers).

Even if multiple CCs are assigned to the mobile station apparatus basedon the categories of the mobile station apparatus of the related art,however, there have been some cases where the mobile station apparatuscannot perform communication using the assigned CC. Adequate radioresource assignment to the mobile station cannot be achieved.Additionally, it is difficult to achieve a reduction in complexity ofcircuits, lower power consumption, lower cost, miniaturization, andhigher productivity while achieving the maximum compatibility withvarious LTE-A technical elements. Thus, the related art has had demeritsin that radio resources adequate for communication between the mobilestation apparatus and the base station apparatus cannot be assigned.

The present invention has been made in view of the above situations. Anobject of the present invention is to provide a mobile stationapparatus, a base station apparatus, a wireless communication system, acommunication control method, and a communication control program, whichcan assign radio resources adequate for communication between the mobilestation apparatus and the base station apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a conceptual diagram illustrating a communication systemaccording to a first embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating an aggregation of CCsaccording to the first embodiment.

FIG. 3 is a schematic block diagram illustrating a configuration of atransmission and reception apparatus according to the first embodiment.

FIG. 4 is a schematic block diagram illustrating a simplifiedconfiguration of the transmission and reception apparatus according tothe first embodiment.

FIG. 5 is an explanatory diagram illustrating radio parameters accordingto the first embodiment.

FIG. 6 is an explanatory diagram illustrating the frequency band numbersaccording to the first embodiment.

FIG. 7 is an explanatory diagram illustrating the BB frequency bandwidthnumbers according to the first embodiment.

FIG. 8 is a schematic block diagram illustrating a simplifiedconfiguration of a transmission and reception apparatus according to thefirst embodiment.

FIG. 9 is a schematic block diagram illustrating a simplifiedconfiguration of the transmission and reception apparatus according tothe first embodiment.

FIG. 10 is a schematic block diagram illustrating a configuration of amobile station apparatus according to the first embodiment.

FIG. 11 is an explanatory diagram illustrating transmission andreception apparatus configuration information converted into abstractsyntax notation 1 according to the first embodiment.

FIG. 12 is a schematic diagram illustrating an example of an LTE-Amobile station communication capability message according to the firstembodiment.

FIG. 13 is a schematic diagram illustrating another example of the LTE-Amobile station communication capability message according to the firstembodiment.

FIG. 14 is a schematic diagram illustrating an example of thetransmission and reception apparatus configuration information accordingto the first embodiment.

FIG. 15 is a schematic block diagram illustrating a configuration of abase station apparatus according to the first embodiment.

FIG. 16 is a schematic diagram illustrating LTE mobile stationcategories according to the related art.

FIG. 17 is a schematic diagram illustrating an example of transmissionand reception apparatus configuration information according to a secondembodiment of the present invention.

FIG. 18 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to the secondembodiment.

FIG. 19 is a schematic diagram illustrating another example of the LTE-Amobile station category relationship information according to the secondembodiment.

FIG. 20 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to a modifiedexample 1 of the second embodiment.

FIG. 21 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to a modifiedexample 2 of the second embodiment.

FIG. 22 is a schematic diagram illustrating another example of the LTE-Amobile station category relationship information according to themodified example 2 of the second embodiment.

FIG. 23 is a schematic block diagram illustrating a configuration of amobile station apparatus according to the second embodiment.

FIG. 24 is a schematic diagram illustrating an example of LTE-A mobilestation category information converted into abstract syntax notation 1according to the second embodiment.

FIG. 25 is a schematic diagram illustrating LTE-A mobile stationcategory information converted into abstract syntax notation 1 accordingto a modified example 3 of the second embodiment.

FIG. 26 is a schematic block diagram illustrating a configuration of amobile station apparatus according to a third embodiment of the presentinvention.

FIG. 27 is a schematic diagram illustrating an example of an LTE-Amobile station communication capability message according to the thirdembodiment.

FIG. 28 is a schematic diagram illustrating an example of transmissionand reception apparatus configuration information according to the thirdembodiment.

FIG. 29 is a schematic diagram illustrating another example of thetransmission and reception apparatus configuration information accordingto the third embodiment.

FIG. 30 is a schematic diagram illustrating an example of transmissionand the reception apparatus configuration number information accordingto a fourth embodiment of the present invention.

FIG. 31 is a schematic block diagram illustrating a configuration of amobile station apparatus according to the fourth embodiment.

FIG. 32 is a schematic diagram illustrating an example of an LTE-Amobile station communication capability message according to the fourthembodiment.

FIG. 33 is a schematic diagram illustrating another example of the LTE-Amobile station communication capability message according to the fourthembodiment.

FIG. 34 is a schematic diagram illustrating an aggregation of CCsaccording to related art.

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment

Hereinafter, a first embodiment of the present invention is explained indetail with reference to the drawings.

Explanation of the first embodiment is given with respect to a casewhere a mobile station apparatus transmits a mobile station apparatuscapability message (transmission and reception capability information)including the number of RF transmission and reception branches, thenumber of baseband modulation and demodulation branches, the frequencyband number, and the baseband frequency bandwidth number; and a basestation apparatus assigns, based on the mobile station apparatuscapability message, radio resources to be used for communication withthe mobile station apparatus, in other words, resource blocks RB of aradio frame of an OFDM signal included in an uplink/downlink CC(component carrier), which are to be used by each mobile stationapparatus. Here, radio parameters, such as the number of RF transmissionand reception branches, are expressed by a unified structuraldescription to generate information in one data format, thereby enablingthe mobile station apparatus capability message to be compatible withvarious LTE-A technical elements.

(Regarding Communication System)

FIG. 1 is a conceptual diagram illustrating a communication systemaccording to a first embodiment of the present invention. In FIG. 1, abase station apparatus B communicates with mobile station apparatusesA11 and A12. FIG. 1 shows that the mobile station apparatus A11transmits a mobile station apparatus capability message to a basestation apparatus B. Additionally, FIG. 1 shows that the base stationapparatus B assigns radio resources to the mobile station apparatus A11based on the mobile station apparatus capability message received fromthe mobile station apparatus A11. Here, communication from the mobilestation apparatus A11 or A12 to the base station apparatus B is referredto as uplink communication. Communication from the base stationapparatus B to the mobile station apparatus A11 or A12 is referred to asdownlink communication.

Hereinafter, each of the mobile station apparatuses A11 and A12 isreferred to as a mobile station apparatus A1.

The mobile station apparatus A1 and the base station apparatus B performcommunication using the carrier aggregation technology (hereinafterreferred to as CA technology). The CA technology is such technology thatthe mobile station apparatus A1 simultaneously receives signalstransmitted from the base station apparatus B, using continuous ornon-continuous downlink component carriers each having a small frequencybandwidth (for example, 20 MHz bandwidth), and generates a pseudocarrier signal having a large frequency bandwidth (for example, 100 MHzbandwidth of five CCs), thereby achieving high-speed downlink datatransmission. Similarly, according to the CA technology, the basestation apparatus B simultaneously receives CC signals transmitted fromthe mobile station apparatus A1, using continuous or non-continuousuplink component carriers each having a small frequency bandwidth (forexample, 20 MHz bandwidth), and generates a pseudo carrier signal havinga large frequency bandwidth (for example, 40 MHz bandwidth of two CCs),thereby achieving high-speed uplink data transmission.

(Regarding CA Technology)

Hereinafter, the CA technology is explained in detail.

FIG. 2 is a schematic diagram illustrating an aggregation of CCsaccording to the first embodiment. In FIG. 2, a horizontal axis denotesfrequency. Additionally, FIG. 2 shows a case where there are twofrequency bands, which are a frequency band 1 (2 GHz band) and afrequency band 2 (3 GHz band). Further, FIG. 2 shows cases 1 to 6separated in the vertical direction. The cases 1 to 3 show cases of aFDD (Frequency Division Duplex) transmission mode. The cases 4 to 6 showthe cases of a TDD (Time Division Duplex) transmission mode.

In FIG. 2, the case 1 shows an aggregation of CCs where three continuousCCs (center frequencies f1_R1, f1_R2, and f1_R3) are selected in a band12 (downlink) included in the frequency band 1, and two continuous CCs(center frequencies f1_T1 and f1_T2) are selected in a band 11 (uplink)included in the same frequency band 1.

The case 2 shows an aggregation of CCs where two non-continuous CCs(center frequencies f1_R1 and f1_R3; Intra CA case) are selected in theband 12 included in the frequency band 1, and two non-continuous CCs(center frequencies f1_T1 and f1_T3) are selected in the band 11included in the same frequency band 1.

The case 3 shows an aggregation of CCs where a CC (center frequencyf1_R1) is selected in the band 12 included in the frequency band 1, a CC(center frequency f2_R1) is selected in the band 22 included in thefrequency band 2, and a CC (center frequency f1_T1) is selected in theband 1 included in the frequency band 1. The case 3 shows that twonon-continuous CCs (Inter CA case) for downlink communication areselected from different frequency bands 1 and 2, and one CC is selectedfor uplink communication.

The cases 4, 5, and 6 are associated with the cases 1, 2, and 3,respectively. For example, the case 4 shows an aggregation of CCs wherethe band 12 is used for downlink/uplink communications, and CCs areselected according to time bands. The case 4 shows an aggregation of CCswhere three continuous CCs (center frequencies f1_1, f1_2, and f1_3) areselected in the band 12 for downlink communication, and two continuousCCs (center frequencies f1_1 and f1_2) are selected in the band 12 foruplink communication.

The mobile station apparatus A1 and the base station apparatus B performcommunication using the selected CCs. Here, the mobile stationapparatuses A1 occasionally include transmission and receptionapparatuses having different configurations from one another, and theCCs to be used for the CA technology differ. Hereinafter, multipleexamples of configurations (transmission and reception apparatuses a1 toa3) regarding the transmission and reception apparatus included in themobile station apparatus A1 are explained.

(Regarding Configuration of Transmission and Reception Apparatus a1)

Firstly, a transmission and reception apparatus a1 that performscommunication using one CC is explained here.

FIG. 3 is a schematic block diagram illustrating a configuration of thetransmission and reception apparatus a1 according to the firstembodiment. In FIG. 3, the transmission and reception apparatus a1includes: a transmission and reception common antenna a101; an antennaduplexer (DUP) a102; a radio receiver (RF_Rx) a11; a quadraturedemodulator (IQ_DM) a12; a baseband demodulator (BB_DM) a13; a basebandmodulator (BB_MD) a14; a quadrature modulator (IQ_MD) a15; and a radiotransmitter (RF_Tx) a16.

Firstly, a reception process is explained here.

The antenna duplexer a102 outputs to the radio receiver a11, a signalreceived from the base station apparatus B via the transmission andreception common antenna a101. Additionally, the antenna duplexer a102transmits the signal received from the radio transmitter a16, to thebase station apparatus B through the transmission and reception commonantenna a101.

The radio receiver a11 includes: an LNA (Low Noise Amplifier) a11; andan RF reception band pass filter (Rx_BPF) a112. The LNA a111 amplifiesthe signal received from the antenna duplexer a102, and outputs theamplified signal to the RF reception band pass filter a112. The RFreception band pass filter a112 extracts a signal in the reception band(for example, the band 12 shown in FIG. 2) from the signal received fromthe antenna duplexer a102, and outputs the extracted signal to thequadrature demodulator a12.

The quadrature demodulator a12 includes: an amplifier (AMP) a121; alocal oscillator a122; a phase shifter a123; multipliers a124 and a126;and LPFs (Low Pass Filter) a125 and a127. The amplifier a121 amplifiesthe signal received from the RF reception band pass filter a112, andoutputs the amplified signal to the multipliers a124 and a126. The localoscillator a122 generates a sine wave, and outputs the generated sinewave to the phase shifter a123. The phase shifter a123 outputs to themultiplier a124, the sine wave received from the local oscillator a122.Additionally, the phase shifter a123 shifts, by 90 degrees, the phase ofthe sine wave received from the local oscillator a122 to generate acosine wave, and outputs the generated cosine wave to the multipliera126.

The multiplier a126 multiplies the signal received from the amplifiera121 by the sine wave received from the phase shifter a123, therebyextracting an in-phase component of the signal and downconverting thesignal. The multiplier a124 outputs the signal multiplied by the sinewave to the LPF a125. The LPF a125 extracts a low frequency component ofthe signal received from the multiplier a124. The LPF a125 outputs anin-phase component of the extracted signal to the baseband demodulatora13.

The multiplier a126 multiplies the signal received from the amplifiera121 by the cosine wave received from the phase shifter a123, therebyextracting an orthogonal component of the signal and downconverting thesignal. The multiplier a126 outputs to the LPF a127, the signalmultiplied by the sine wave. The LPF a127 extracts a low frequencycomponent of the signal received from the multiplier a126. The LPF a127outputs to the baseband demodulator a13, an in-phase component of theextracted signal.

The baseband demodulator includes: AD (Analog to Digital) Converters(ADC) a131 and a132; a digital filter (Rx_DF) a133; a CP (Cyclic Prefix)remover a134; an S/P (Serial/Parallel) converter a135; an FFT (FastFourier Transform) unit a136; demappers a137-1 to a137-s; and a P/S(Parallel/Serial) converter a138. The AD converters a131 and a132respectively convert the signals received from the LPFs a125 and a127,and output the converted signals to the digital filter a133. The digitalfilter a133 extracts a signal in the reception band (for example, f1_R1shown in FIG. 2) from the signal received from the AD converters a131and a132, and outputs the extracted signal to the CP remover a133. TheCP remover a134 removes a CP from the signal received from the digitalfilter a133, and outputs the resultant signal to the S/P converter a135.The S/P converter a135 performs serial-to-parallel conversion on thesignal received from the CP remover a134, and outputs the resultantsignals to the FFT unit a136. The FFT unit a136 performs Fourierconversion to convert the signals received from the S/P converter a135from time domain signals to frequency domain signals, and outputs thefrequency domain signals to the demappers a137-1 to a137-s. Thedemappers a137-1 to a137-s demap the frequency domain signals receivedfrom the FFT unit a136, and output the demapped signals to the P/Sconverter a138. The P/S converter a138 performs parallel-to-serialconversion on the signals received from the respective demappers a137-1to a137-s to obtain reception data, and outputs the obtained receptiondata.

Next, a transmission process is explained here.

The baseband modulator a14 includes: an S/P (Serial/Parallel) convertera141; mappers a142-1 to a142-t; an IFFT (Inverse Fast Fourier Transform)unit a143; a P/S (Parallel/Serial) converter a144; a CP inserter a145; adigital filter (Tx_DF) a146; and DA (Digital to Analog) converters (DAC)a147 and a148. The S/P converter a141 performs serial-to-parallelconversion on input transmission data, and outputs the parallel signalsto the mappers a142-1 to a142-t. The mappers a142-1 to a142-t map thesignals received from the S/P converter a141, and outputs the mappedsignals to the IFFT unit a143. The IFFT unit a143 performs inverseFourier transform to convert the signals received from the mappersa142-1 to a142-t from frequency domain signals into time domain signals,and outputs the time domain signals to the P/S converter a144. The P/Sconverter a144 performs parallel-to-serial conversion on the time domainsignals received from the IFFT unit a143, and outputs the serial signalto the CP inserter a145. The CP inserter a145 inserts a CP into thesignal received from the P/S converter a144, and outputs the resultantsignal to the digital filter a146. The digital filter a146 extracts asignal in the transmission band (for example, f1_T1 shown in FIG. 2)from the signal received from the CP inserter a145. The digital filtera146 outputs an in-phase component and an orthogonal component of thesignal received from the extracted signal to the DA converters a147 anda148, respectively. The DA converters a147 and a148 respectively convertthe signals (digital signals) received from the digital filter a146 intoanalog signals, and output the analog signals to the quadraturemodulator a15.

The quadrature modulator a15 includes: LPFs a151 and a152; a localoscillator a153; a phase shifter a154; multipliers a155 and a156; and anamplifier (AMP) a157. The LPFs a151 and a152 extract low frequencycomponents from the signals received from the DA converters a147 anda148, respectively. The local oscillator a153 generates a sine wave, andoutputs the sine wave to the phase shifter a154. The phase shifter a154outputs to the multiplier a155, the sine wave received from the localoscillator a153. Additionally, the phase shifter a154 shifts, by 90degrees, the phase of the sine wave received from the local oscillatora153 to generate a cosine wave, and outputs the generated cosine wave tothe multiplier a156.

The multiplier a155 multiplies the signal received from the LPF a151 bythe sine wave received from the phase shifter a154, thereby generatingan in-phase component wave and upconverting the signal. The multipliera155 outputs to the amplifier a157, the signal multiplied by the sinewave. The multiplier a156 multiplies the signal received from the LPFa152 by the cosine wave received from the phase shifter a154, therebygenerating an orthogonal component wave and upconverting the signal. Themultiplier a156 outputs to the amplifier a157, the signal multiplied bythe cosine wave. The amplifier a157 amplifies the signals received fromthe multipliers a155 and a156, and outputs the amplified signals to theradio transmitter a16.

The radio transmitter a16 includes: an RF transmission band pass filter(Tx_BPF) a161; and a PA (Power Amplifier) a162. The RF transmission bandpass filter a161 extracts a signal in the transmission band (forexample, the band 11 shown in FIG. 2) from the signal received from theamplifier a157, and outputs the extracted signal to the PA a162. The PAa162 amplifies the signal received from the RF transmission band passfilter a161, and outputs the amplified signal to the antenna duplexera102.

Thanks to the above configuration, the transmission and receptionapparatus a1 transmits signals using uplink CCs having the centerfrequency f1_T1 and the 20 MHz frequency bandwidth shown in FIG. 2. Thetransmission and reception apparatus a1 having the configuration shownin FIG. 3 generates CCs for uplink OFDM signals. However, the presentinvention is not limited thereto, and another combination of circuitblocks forming a configuration of SC-FDMA (Single-CarrierFrequency-Division Multiple Access) may be used to generate continuousuplink SC-FDMA signals or non-continuous SC-FDMA (Clustered DFT-S-OFDMor CL-DFT-S-OFDM) signals to be transmitted using CCs. Additionally, thedirect-conversion-type transmission and reception apparatus a1 has beenexplained with reference to FIG. 3. However, the present invention isnot limited thereto, and may be applied to another transmission andreception apparatus, such as a superheterodyne-type transmission andreception apparatus. In this case, the present invention can be appliedthereto if the correspondence relationship of the quadraturedemodulators a12 and a15 is modified.

FIG. 4 is a schematic block diagram illustrating a simplifiedconfiguration of the transmission and reception apparatus a1 accordingto the first embodiment. FIG. 4 is obtained by simplifying theconfiguration of the transmission and reception apparatus a1 shown inFIG. 3. The transmission and reception apparatus a1 includes: atransmission and reception common antenna a101; an antenna duplexer(DUP) a102; a radio transmitter (RF_Rx) a11; a radio receiver (RF_Rx)a11; a quadrature demodulator (IQ_DM) a12; a baseband demodulator(BB_DM) a13; a baseband modulator (BB_MD) a14; a quadrature modulator(IQ_MD) a15; and a radio transmitter (RF_Tx) a16.

(Regarding Radio Parameters)

FIG. 5 is an explanatory diagram illustrating radio parameters accordingto the first embodiment. FIG. 5 shows that radio parameters includeRF_BWm and BB_BWn. Here, m denotes the number of a frequency band for asystem operation (referred to as the frequency band number), such thatm=1, 2, . . . , M. For example, the frequency band numbers of thefrequency bands 1 and 2 shown in FIG. 2 are 1 and 2, respectively.Additionally, n denotes the number of a frequency bandwidth of abaseband (hereinafter referred to as the BB frequency bandwidth number),such that n=1, 2, . . . , N.

Here, parameters RF_BWm are associated with the transmission andreception common antenna a101, the antenna duplexer a102, the radioreceiver a11, the quadrature demodulator a12, the quadrature modulatora15, and the radio transmitter a16, which are shown in FIG. 4.Additionally, parameters BB_BWn are associated with the quadraturedemodulator a12, the baseband demodulator a13, the baseband modulatora14, and the quadrature modulator a15, which are shown in FIG. 4. Thedetails of these associations are explained later with reference toFIGS. 6 and 7.

FIG. 6 is an explanatory diagram illustrating the frequency band numbersaccording to the first embodiment (excerpted partially from the table 5.5-1 EUTRA operating bands of 3GPP TS 36.101). FIG. 6 shows therelationship among the frequency band numbers, uplink frequency bands,downlink frequency bands, frequency bandwidths, and transmission modes.For example, the relationship on the first row indicates that afrequency band having the frequency band number “1” (see the frequencyband 1 shown in FIG. 2) is associated with the uplink frequency band“1920 MHz to 1980 MHz” (see the band 11 shown in FIG. 2), the downlinkfrequency band “2110 MHz to 2170 MHz” (see the band 12 shown in FIG. 2),the frequency band “60 MHz,” and the transmission mode “FDD.” Along withaddition of frequency bands for the IMT-Advanced, the frequency bandnumbers (from the number 41) for the LTE-A system are expected to beadded to a related specification.

Based on the parameter RF_BWm, operation frequencies and operationfrequency bands of the transmission and reception common antenna a101,the antenna duplexer a102, the radio receiver a11, the quadraturedemodulator a12, the quadrature modulator a15, and the radio transmittera16 are determined.

FIG. 7 is an explanatory diagram illustrating the BB frequency bandwidthnumbers according to the first embodiment. FIG. 7 shows the relationshipbetween the BB frequency bandwidth numbers and frequency bandwidths. Forexample, the BB frequency bandwidth numbers 1, 2, 3, 4, and 5 indicateaggregations of 20 MHz CC bandwidths. Additionally, the BB frequencybandwidth numbers 6, 7, and more may indicate aggregations of CCbandwidths of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, and 15 MHz.

For the downlink, the downconverter (the local oscillator a122, thephase shifter a123, and the multipliers a124 and a126) of the quadraturedemodulator a12 shown in FIG. 4, frequency characteristics of the LPFsa125 and a127 shown in FIG. 4, frequency characteristics of the digitalfilter a133 of the baseband demodulator a13 shown in FIG. 4, andsampling frequencies of the AD converter a131 and the FFT unit a136shown in FIG. 4 are determined based on the parameters of the BBfrequency bandwidth numbers. Similarly, for the uplink, upconverter (thelocal oscillator a153, the phase shifter a154, and the multipliers a155and a156) of the quadrature modulator a15 shown in FIG. 4, frequencycharacteristics of the LPFs a151 and a152 shown in FIG. 4, frequencycharacteristics of the digital filter a146 of the baseband modulator a14shown in FIG. 4, and sampling frequencies of the IFFT unit a143 and theDA converters a147 and a148 shown in FIG. 4 are determined based on theparameters of the BB frequency bandwidth numbers

(Regarding Configuration of Transmission and Reception Apparatus a2)

Next, the transmission and reception apparatus a2, which performscommunication using one frequency band and multiple CCs (L downlink CCsand K uplink CCs), is explained here.

FIG. 8 is a schematic block diagram illustrating a simplifiedconfiguration of the transmission and reception apparatus a2 accordingto the first embodiment. In FIG. 8, the transmission and receptionapparatus a2 includes: a transmission and reception common antenna a201;an antenna duplexer (DUP) a202; a radio receiver (RF_Rx) a21; Lquadrature demodulators (IQ_DMl) a22-1 (small letter of L; 1=1, 2, . . ., L); L baseband demodulators (BB_DMl) a23-1 (small letter of L); Kbaseband modulators (BB_MDl) a24-k (k=1, 2, . . . , K); K quadraturemodulators (ID_MDl) a25-k; and a radio transmitter (RF_Tx) a26. Here,the antenna duplexer a202, the radio receiver a21, the quadraturedemodulator a22-1, the baseband demodulator a23-1, the basebandmodulator a24-k, and the quadrature modulator a25-k respectively havethe same configurations and functions as those of the antenna duplexera102, the radio receiver a11, the quadrature demodulator a12, thebaseband demodulator a13, the baseband modulator a14, and the quadraturemodulator a15, which are shown in FIG. 3. Therefore, explanationsthereof are omitted here. Here, each of the quadrature demodulatorsa22-1 and each of the baseband demodulators a23-1 process signalsreceived using associated one or more continuous downlink CCs.Additionally, each of the quadrature modulators a24-k and each of thequadrature modulators a25-k process signals to be transmitted usingassociated one or more continuous uplink CCs.

The transmission and reception apparatus a2 shown in FIG. 8 can receivesignals using L continuous/non-continuous downlink CCs in one frequencyband, and transmit signals using K continuous/non-continuous uplink CCsin one frequency band. Additionally, the transmission and receptionapparatus a2 includes the L quadrature demodulators a22-1 and the Lbaseband demodulators a23-1, thereby achieving compatibility withasynchronous transmission using downlink CCs. If the respective BBfrequency bandwidth numbers BB_BWn differ, the total number ofcontinuous/non-continuous downlink CCs, the total number of downlink CCsfor asynchronous transmission, the bandwidths of continuous CCs eachhaving the 15 kHz OFDM subcarrier bandwidth also vary, thereby enablingvarious aggregations. Similar explanations apply to the uplink.

(Regarding Configuration of Transmission and Reception Apparatus a3)

Next, a transmission and reception apparatus a3, which performscommunication using one or more frequency bands and multiple CCs, isexplained here.

FIG. 9 is a schematic block diagram illustrating a simplifiedconfiguration of the transmission and reception apparatus a3 accordingto the first embodiment. In FIG. 9, the transmission and receptionapparatus a3 includes: transmission and reception common antennas a301-i(i=1, 2, . . . , and I); antenna duplexers (DUPi) a302-i; radioreceivers (RF_Rxi) a31-i; quadrature demodulators (IQ_DMil) a32-il(small letter of L; 1=1, 2, . . . , L); baseband demodulators (BB_DMil)a33-il (small letter of L); baseband modulators (BB_MDjk) a34-jk (j=1,2, . . . , I; K=1, 2, . . . , K); quadrature modulators (IQ_MDjk)a35-jk; and radio transmitters (RF_Txi) a36-j. Here, the antennaduplexers a302-i, the radio receivers a31-i, the quadrature demodulatorsa32-il, the baseband demodulators a33-il, the baseband modulator a34-jk,the quadrature modulator a35-jk, and the radio transmitters a36-jrespectively have the same configurations and functions as those of theantenna duplexer a202, the radio receiver a21, the quadraturedemodulator a22-1, the baseband modulators a23-1, the baseband modulatora24-k, and the quadrature modulators a25-k, which are shown in FIG. 8.Therefore, explanations thereof are omitted here.

Here, a set of the quadrature demodulator a32-il and the basebanddemodulator a33-il processes OFDM baseband signals received using thel-th (small letter of L) downlink CC included in the i-th frequency band(each set is referred to as a BB demodulation branch il, and l (smallletter of L) is referred to as the BB demodulation branch number; acomponent carrier reception processor). Additionally, a set of thebaseband modulator a34-jk and the quadrature modulator a35-jk processesOFDM baseband signals received using the k-th uplink CC included in thej-th frequency band (each set is referred to as a BB modulation branchjk, and k is referred to as the BB modulation branch number; a componentcarrier transmission processor). A set of the radio receiver a31-i andthe BB demodulation branches il to iL process OFDM radio receptionsignals received in the i-th frequency band (each set is referred to asan RF reception branch i, and i is referred to as the RF receptionbranch number; a frequency band reception processor). Additionally, aset of the radio transmitter a36-j and the BB modulation branches jl tojK processes OFDM radio transmission signals to be transmitted in thej-th frequency band (each set is referred to as an RF transmissionbranch j, and j is referred to as the RF transmission branch number; afrequency band transmission processor).

Although FIG. 9 shows the case where the number of the RF receptionbranches is equal to that of the RF transmission branches (I pieces),the present invention is not limited thereto. The number of the RFreception branches may differ from that of the RF transmission branches.Additionally, although FIG. 9 shows the case where the number of the BBdemodulation branches included in each RF reception branch is identical(L pieces), the present invention is not limited thereto. The number ofthe BB demodulation branches included in each RF reception branch maydiffer. Similarly, the number of the BB modulation branches included ineach RF transmission branch may differ.

If the transmission and reception apparatus a3 transmits and receivessignals in the same frequency band, the transmission and receptionapparatus a3 can be compatible with a downlink/uplink MIMO method, aCoMP (coordinated multipoint) method for communication between basestation apparatuses, and an uplink transmission diversity method, sincethe transmission and reception apparatus a3 includes multiple RFreception branches i and RF transmission branches j. If the transmissionand reception apparatus a3 receives signals in different frequencybands, the transmission and reception apparatus a3 can be compatiblewith the above methods with respect to multiple frequency bands, sincethe transmission and reception apparatus a3 includes multiple RFreception branches i and the RF transmission branches j.

(Regarding Configuration of Mobile Station Apparatus A1)

Hereinafter, the mobile station apparatus A1 including the transmissionand reception apparatus a1, a2, or a3 is explained.

FIG. 10 is a schematic block diagram illustrating a configuration of themobile station apparatus A1 according to the first embodiment. In FIG.10, the mobile station apparatus A1 includes: a transmission andreception apparatus A101; a controller A102; an assignment informationstoring unit A103; a transmission and reception apparatus configurationinformation storing unit A104; an ASN (Abstract Syntax Notation) encoderA105; and an RRC (Radio Resource Control) message generator A106.

The transmission and reception apparatus A101 is the aforementionedtransmission and reception apparatus a1, a2, or a3.

The controller A102 controls each unit of the mobile station apparatusA1. For example, the controller A102 receives, as control data, radioresource information assigned by the base station apparatus B. Then, thecontroller A102 stores the received assignment resource information inthe assignment information storing unit A103. The controller A102 readsout the radio resource information from the assignment informationstoring unit A103, and controls transmission and reception.

The transmission and reception apparatus configuration informationstoring unit A104 stores transmission and reception apparatusconfiguration information (for example, FIG. 14, the details will beexplained later) in a memory. The transmission and reception apparatusconfiguration information can be previously set according to theconfiguration of the mobile station apparatus and be written in thetransmission and reception apparatus configuration information storingunit A104 at the time of factory shipment.

Additionally, the controller A102 outputs, to the ASN encoder A105, thetransmission and reception apparatus configuration information stored bythe transmission and reception apparatus configuration informationstoring unit A104. Here, the transmission and reception apparatusconfiguration information includes information indicating theconfiguration of the transmission and reception unit A101. The detailsof the transmission and reception apparatus configuration informationare explained later with an RRC message generation process.

The ASN encoder A105 converts the transmission and reception apparatusconfiguration information received from the controller A102 into anabstract syntax notation 1 (ASN. 1) to perform encoding. Then, the ASNencoder A105 outputs the encoded information to the RRC messagegenerator A106. The details of the process performed by the ASN encoderA105 will be explained later with the RRC message generation process.

The RRC message generator A106 generates an LTE-A mobile stationcommunication capability message (UE-Advanced EUTRA-Capability)including the information received from the ASN encoder A105. Then, theRRC message generator A106 outputs the LTE-A mobile stationcommunication capability message to the transmission and receptionapparatus A101 as part of the uplink RRC message included in controldata. The details of the process performed by the RRC message generatorA106 will be explained later with the RRC message generation process.

The transmission and reception apparatus A101 processes, by the RFtransmission branch j, the RRC message received from the RRC messagegenerator A106, and transmits the processed message to the base stationapparatus B.

Additionally, the controller A102, the assignment information storingunit A103, the transmission and reception apparatus configurationinformation storing unit A104, the ASN encoder A105, and the RRC messagegenerator A106 may be included in an integrated circuit chip.Alternatively, a part of these units may be included in the transmissionand reception apparatus A101, or all of these units may be included inan integrated circuit chip. Thus, the configuration is not limited.

(Regarding RRC Message Generation Process)

Hereinafter, the RRC message generation process performed by the ASNencoder A105 and the RRC message generator A106 is explained.

FIG. 11 is an explanatory diagram illustrating the transmission andreception apparatus configuration information (UE-RF-Capability shown inFIG. 12) to be included in the LTE-A mobile station communicationcapability message (UE-Advanced EUTRA-Capability shown in FIG. 12)converted into the abstract syntax notation 1 according to the firstembodiment. FIG. 11 shows that there are radio parameters of RXi,RF_BWm, BB_DMl (small letter of L), BB_Wn, TXj, RF_BWm, BB_MDk, andBB_BWn, and these parameters have a hierarchical structure.

In FIG. 11, the parameter RXi indicates the RF reception branch numberi. As explained above, the RF reception branch number i is a value suchthat i=1, 2, . . . , I. Here, I denotes the maximum number of RFreception branches (the maximum number of reception antennas). Forexample, I=8 is the case of 8.times.8 MIMO.

The parameter RF_BWm, which is lower in hierarchy than the parameterRXi, indicates the frequency band number m allocated to a frequency bandin which the RF reception branch i can perform reception.

The parameter BB_DMl (small letter of L), which is lower in hierarchythan the parameter RXi, indicates the number l (small letter of L)allocated to a BB demodulation branch included in the RF receptionbranch i.

The parameter BB_BWn, which is lower in hierarchy than the parameterBB_DMl, indicates the BB frequency bandwidth number n allocated to abaseband frequency bandwidth of a baseband in which the BB demodulationbranch l (small letter of L) can perform the process.

Additionally, in FIG. 11, the parameter TXj indicates the RFtransmission branch number j. The RF transmission branch number j is avalue such that i=1, 2, . . . , J. Here, J denotes the maximum number ofRF transmission branches (the maximum number of transmission antennas).For example, J=4 in the case of 4.times.4 MIMO.

The parameter RF_BWm, which is lower in hierarchy than the parameterTXj, indicates the frequency band number m allocated to a frequency bandin which the RF transmission branch j can perform transmission.

The parameter BB_MDk, which is lower in hierarchy than the parameterTXj, indicates the number k allocated to a BB modulation branch includedin the RF transmission branch j.

The parameter BB_BWn, which is lower in hierarchy than the parameterBB_MDk, indicates the BB frequency bandwidth number n allocated to abaseband frequency bandwidth of a baseband in which the BB modulationbranch k can perform the process.

FIG. 12 is a schematic diagram illustrating an example of the LTE-Amobile station communication capability message (UE-AdvancedEUTRAN-Capability) and the transmission and reception apparatusconfiguration information (UE-RF-Capability) according to the firstembodiment. In FIG. 12, a parameter Max-RFRx-Branchs indicates themaximum number I of RF reception branches. Additionally, a parameterMax-BBRx-Branchs indicates the maximum number L of BB demodulationbranches. Similarly, a parameter Max-RFTx-Branchs indicates the maximumnumber J of RF transmission branches. A parameter Max-TxBB-Branchsindicates the maximum number K of BB modulation branches. Additionally,a parameter Max-RF-Bands indicates the maximum frequency band number M.A parameter Max-BBRX-Bands indicates the maximum BB frequency bandwidthnumber N.

For example, in FIG. 12, RF reception branch configuration information(UE-RFRx-Branchs) and RF transmission branch configuration information(UE-EFTx-Branchs) are substituted in the transmission and receptionconfiguration information (UE-RF-Capability shown in FIG. 12).

In FIG. 12, I RF reception branch configuration informations(UE-RFRX-Branch) are substituted in the RF reception branchconfiguration information (UE-RFRx-Branchs). L BB demodulation branchconfiguration informations (UE-BBRx-Branchs) and information(UE-RFRx-Brand-List) of the frequency band number m associated with thei-th RF reception branch are substituted in the i-th RF reception branchconfiguration information (UE-RFRX-Branch). Information(UE-BBRx-Band-List) of the BB frequency bandwidth number n associatedwith the l-th BB demodulation branch is substituted in the l-th (smallletter of L) BB demodulation branch configuration information(UE-BBRx-Branch).

Here, ue-rfrx-band, that is, the parameter RF_BWm which is lower inhierarchy than the parameter RXi shown in FIG. 11, is substituted in theinformation (UE-RFRx-Band-List) of the frequency band number massociated with the i-th RF reception branch. Additionally,ue-rxbb-band, that is, the parameter BB_BWn which is lower in hierarchythan the parameter BB_DMl (small letter of L) shown in FIG. 11, issubstituted in the information (UE-BBRx-Band-List) of the BB frequencybandwidth number n associated with the l-th BB demodulation branch.

Additionally, in FIG. 12, J RF transmission branch configurationinformations (UE-RFTX-Branch) are substituted in the RF transmissionbranch configuration information (UE-RFTx-Branchs). K BB modulationbranch configuration informations (UE-BBTx-Branchs) and information(UE-RFTx-Brand-List) of the frequency band number m associated with thej-th RF transmission branch are substituted in the j-th RF transmissionbranch configuration information (UE-RFTX-Branch). Information(UE-BBTx-Band-List) of the BB frequency bandwidth number n associatedwith the k-th BB modulation branch is substituted in the k-th BBmodulation branch configuration information (UE-BBTx-Branch).

Here, ue-rftx-band, that is, the parameter RF_BWm which is lower inhierarchy than the parameter TXj shown in FIG. 11, is substituted in theinformation (UE-RFTx-Band-List) of the frequency band number massociated with the j-th RF transmission branch. Additionally,ue-txbb-band, that is, the parameter BB_BWn which is lower in hierarchythan the parameter BB_MDk shown in FIG. 11, is substituted in theinformation (UE-BBTx-Band-List) of the BB frequency bandwidth number nassociated with the k-th BB modulation branch.

FIG. 13 is a schematic diagram illustrating another example of the LTE-Amobile station communication capability message according to the firstembodiment. In FIG. 13, category information (ue-Category shown in FIG.13) of the LTE-A mobile station apparatus and transmission and receptionapparatus configuration information (UE-RF-Capability shown in FIG. 12)are added to the LTE mobile station communication capability message(UE-EUTRAN-Capability) of the related art, thus expressing the LTE-Amobile station communication capability message. The categoryinformation of the mobile station apparatus will be explained in asecond embodiment.

FIG. 14 is a schematic diagram illustrating an example of thetransmission and reception apparatus configuration information accordingto the first embodiment. FIG. 14 shows that two BB demodulation branches(BB_DM1 and BB_DM2) are included in one RF reception branch (RX1) andthat one BB modulation branch (BB_MD1) is included in the one RFtransmission branch 1 (TX1).

Additionally, FIG. 14 shows, for example, that the RF reception branch 1(RX1) can perform reception in the frequency band allocated with thefrequency band number “1” (RF_BW1, see FIG. 6). Additionally, forexample, FIG. 14 shows that the BB demodulation branch 1 (BB_DM1)included in the RF reception branch 1 can perform the process using thebaseband frequency bandwidth allocated with the BB frequency bandwidthnumber “3” (BB BW3, see FIG. 7).

(Regarding Configuration of Base Station Apparatus B)

FIG. 15 is a schematic block diagram illustrating a configuration of abase station apparatus B according to the first embodiment. In FIG. 15,the base station apparatus B includes: a transmission and receptionapparatus B101; a controller B102; and an assignment information storingunit B103.

The transmission and reception apparatus B101 transmits and receivesdata to and from the mobile station apparatus A1. The transmission andreception apparatus B101 has the same basic configuration and basicfunctions as those of the transmission and reception apparatus a3.Therefore, explanations thereof are omitted here.

The controller B102 controls each unit of the base station apparatus B.For example, the controller B102 decodes the RRC message received fromthe mobile station apparatus A1 to extract transmission and receptionapparatus configuration information. Based on the extracted transmissionand reception apparatus configuration information, the controller B102determines assignment of uplink/downlink radio resources to the mobilestation apparatus A1.

Additionally, the controller B102 and the assignment information storingunit B103 may be included in an integrated circuit chip. Alternatively,part of the controller B102 and the assignment information storing unitB103 may be included in the transmission and reception apparatus B101.Alternatively, all of the controller B102 and the assignment informationstoring unit B103 may be included in the integrated circuit chip. Thus,the configuration is not limited thereto.

For example, if the mobile station apparatus B has communicationcapability as shown in the case 1 of FIG. 2, and if, regarding frequencyassignment or the like, the mobile station apparatus A1 has thetransmission and reception apparatus configuration as shown in the case3 of FIG. 2, the controller B102 decodes, from the RRC message receivedfrom the mobile station apparatus A1, the LTE-A mobile stationcommunication capability message (UE-Advanced EUTRAN-Capability shown inFIG. 12) or the LTE mobile station communication capability message(UE-EUTRAN-Capability shown in FIG. 13) to extract the transmission andreception apparatus configuration information (UE-RF-Capability shown inFIG. 12 or 13). Then, the controller B102 performs uplink/downlink CCassignment, that is, assigns the uplink CC having the frequency f1_T1and the downlink CC having the frequency f1_R1 with respect to theconfiguration of the mobile station apparatus A1. Then, the controllerB102 reports the uplink/downlink CC assignment to the mobile stationapparatus A1 at the time of random access or the like. The controllerB102 assigns to the downlink CC having the frequency f1_R1, downlinkradio resources, in other words, downlink resource blocks RB for themobile station apparatus A1 to receive mobile station apparatus data.Additionally, the controller B102 assigns to the uplink CC having thefrequency uplink radio resources, in other words, downlink resourceblocks RB for the mobile station apparatus A1 to transmit mobile stationapparatus data.

Additionally, if the base station apparatus B has the transmission andreception apparatus configuration shown in the case 1 of FIG. 2 and hasfour transmission antennas for the downlink and two reception antennasfor the uplink, and if the mobile station apparatus A1 has thetransmission and reception apparatus configuration shown in the case 3of FIG. 2 and has two reception antennas for the downlink (two RFreception branches) and one transmission antenna for the uplink (one RFtransmission branch), the controller B102 of the base station apparatusB can perform 2×2 MIMO transmission using the resource blocks RBassigned to the downlink CC having the frequency f1_T1, or assignment ofdownlink resource blocks RB common to base station apparatuses thatperform CoMP communication between the base station apparatuses. Inother words, the controller B102 of the base station apparatus Bcompares the transmission and reception apparatus configurationinformation received from the mobile station apparatus A1 to thetransmission and reception apparatus information of the base stationapparatus B, thereby assigning adequate downlink/uplink radio resourcesto the mobile station apparatus A1 within the base station apparatuscommunication capability and the mobile station apparatus communicationcapability.

The controller B102 stores, in the assignment information storing unitB103, the assignment information of the uplink/downlink CCs andassignment information of the radio resources assigned to theuplink/downlink CCs. The controller B102 reads from the assignmentinformation storing unit B103, the assignment information of theuplink/downlink CCs and the assignment information of the radioresources assigned to the uplink/downlink CCs, and thereby controlstransmission and reception. Additionally, the controller B102 transmits,to the mobile station apparatus A1 through the transmission andreception apparatus B101, the assignment information of the determineduplink/downlink CCs and the assignment information of the radioresources assigned to the uplink/downlink CCs.

As explained above, according to the first embodiment, the mobilestation apparatus A1 transmits, to the base station apparatus B, themobile station apparatus capability message including the number of BBdemodulation branches, the number of BB demodulation branches, and thebaseband frequency bandwidth numbers (information relating to acomponent carrier CC), and the number of RF reception branches, thenumber of RF transmission branches, and the frequency band numbers(information relating to a frequency band), which can be used forcommunication with the base station apparatus B. Additionally, themobile station apparatus A1 communicates with the base station apparatusB using the uplink/downlink radio resources assigned by the base stationapparatus B based on the mobile station apparatus capability message.Thereby, in the first embodiment, the communication system can assignuplink/downlink radio resources adequate for communication between themobile station apparatus A1 and the base station apparatus B.

Additionally, the configuration of the LTE-A mobile station depends onthe following elements (a) to (l) (LTE-A technical elements). The LTE-Atechnical elements include: (a) the number of frequencies; (b) the totalnumber of downlink/uplink CCs; (c) continuous/non-continuous CCs (IntraCA/Inter CA); (d) radio transmission modes; (e) synchronous/asynchronoustransmission between downlink CCs or base station apparatuses; (f)various CC bandwidths (for example, 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15MHz, and 20 MHz); (g) the bandwidth of multiple continuous CCs eachhaving the 15 kHz OFDM subcarrier bandwidth (for example, 100 MHz); (h)downlink/uplink MIMO methods; (i) methods of CoMP communication betweenbase station apparatuses; (j) uplink transmission diversity methods; (k)frequency assignment states of mobile telephone service providers; and(l) domestic/international roaming.

Regarding the mobile communication system of the related art, however,various LTE-A technical elements such as the above (a) to (1) have notcaused significant effect on the configuration of the mobile stationapparatus. For example, in the case of the LTE system, categories ofmobile stations (5 types) can be defined by the buffer size of dataprocessing software (maximum downlink data speed 10 Mbps to 300 Mbps)and the maximum MIMO configuration (1×1, 2×2, 4×4). The configuration ofa mobile station apparatus can be identified for each category. In otherwords, 5 types of mobile station apparatuses may be provided for eachmobile telephone service provider. In the market, 5 types of mobilestation apparatuses may be distributed. Additionally, each mobiletelephone service provider may consider services for the 5 types ofmobile station apparatuses. However, the LTE-A system is not so simple.If the categories of mobile station apparatuses for the LTE system ofthe related art are applied to mobile station apparatuses for the LTE-Asystem, the same configuration cannot be defined for the mobile stationapparatuses belong to the same category. In other words, even if mobilestation apparatuses belong to the same category, the mobile stationapparatuses can have different configurations. For this reason, theadequate performance of the mobile station apparatuses cannot be broughtout according to the categories of the mobile station apparatuses. It isdifficult to achieve compatibility with various LTE-A technical elementsand to achieve a reduction in circuit complexity, lower consumptionpower, lower cost, miniaturization, an increase in productivity, and thelike. On the other hand, it is necessary for a base station apparatusfor the LTE-A system to set a limitation to the various LTE-A technicalelements in order to reduce the categories of mobile stationapparatuses.

According to the first embodiment, mobile station apparatusconfiguration information is generated with respect to variouscombinations of LTE-A mobile station apparatus configurations in orderto achieve the compatibility with various LIE-A technical elements suchas the aforementioned (a) to (l), and the generated mobile stationapparatus configuration information is transmitted to the base stationapparatus B. Thereby, according to the mobile station apparatusconfiguration information, the base station apparatus B can bring outadequate performance of the mobile station apparatus A1 compatible withvarious LTE-A technical elements, thereby assigning adequateuplink/downlink radio resources thereto.

As show in FIGS. 11 and 12, the LTE-A mobile station communicationcapability message includes radio parameters of the frequency bandnumber RF_BWm and the baseband frequency bandwidth number BB_BWm.However, the LTE-A mobile station communication capability message mayinclude the maximum transmission power level PA_OUTq (q=1, 2, . . . , Q;q is the number allocated to a combination of the maximum transmissionpower levels), which is a radio parameter of a power amplifier (PA)included in each RF transmission branch number TXj. The radio parameterPA_OUTq has the same level as those of the parameters of thetransmission frequency band RF_BWm associated with the RF transmissionbranch number TXj, and related parameters may be added below RF_BWm ofTXj shown in FIG. 11 and below ue-rftx-band shown in FIG. 12. Forexample, if there are two RF transmission branches, PA_OUTq “1”indicates that the maximum transmission power level of the PA of the RFtransmission branch number 1 (TX1) is 23 dBm, and the maximumtransmission power level of the PA of the RF transmission branch number2 (TX2) is 20 dBm. PA_OUTq “2” indicates the reverse. PA_OUTq “3”indicates that both levels are 23 dBm. PA_OUTq “4” indicates that bothlevels are 20 dBm. If there are J RF transmission branches, acombination of PA_OUTq may be an extension of the above levels.

Additionally, the frequency band number RF_BWm of the radio parametersindicates the relationship among the frequency band numbers, uplinkfrequency bands, the downlink frequency bands, the frequency bandwidths,and transmission modes, as shown in FIG. 6. However, several continuousuplink frequency bands may be combined to define a new wider uplinkfrequency band, and several downlink frequency bands may be combined todefine a new wider downlink frequency band. For example, the frequencyband numbers “1” and “2” shown in FIG. 6 may be combined to define a newfrequency band number “1” which is associated with the uplink frequencyband of 1930 MHz to 2170 MHz and the downlink frequency band of 1850 MHzto 1980 MHz. Additionally, FIG. 9 shows that one RF reception branchincludes multiple BB demodulation branches, and one RF transmissionbranch includes multiple BB modulation branches. If the frequencybandwidths of the quadrature modulator a15 and the quadraturedemodulator a12 are broadband and identical to those of the transmissionand reception bands (for example, the bands 11 and 12 shown in FIG. 2)thanks to the progress of the technology, one quadrature modulator andone quadrature demodulator may be used for one set of a radiotransmitter and a radio receiver. Alternatively, multiple RFtransmission and reception branches, each of which includes a set of aradio transmitter and a radio receiver, a set of a quadrature modulatorand a quadrature demodulator, and a set of baseband modulator and abaseband demodulator, may be included after one transmission andreception antenna and one DUP, or after multiple transmission andreception antennas and multiple DUPs.

Second Embodiment

Hereinafter, a second embodiment of the present invention is explainedwith reference to the drawings.

Explanations are given in the second embodiment with respect to a casewhere new categories of mobile station apparatuses (hereinafter referredto as LTE-A mobile station categories; mobile station categories) aredefined, and a mobile station apparatus capability message including theLTE-A mobile station categories is generated. According to thisconfiguration, the compatibility with various LTE-A technical elementscan be achieved in the second embodiment.

A conceptual diagram of a communication system is the same as FIG. 1 ofthe first embodiment, and therefore explanations thereof are omittedhere. Each of the mobile station apparatuses A11 and A12 according tothe second embodiment is referred to as a mobile station apparatus A2.Here, the mobile station apparatus A2 includes the transmission andreception apparatus a1 (FIGS. 3 and 4), a2 (FIG. 8), or a3 (FIG. 9), aswill be explained later.

Hereinafter, the categories of mobile station apparatuses of the relatedart (LTE) (referred to as LTE mobile station categories) are explainedfirst, and thereafter categories of mobile station apparatuses of thesecond embodiment (LTE-A) are explained.

(Regarding LTE Mobile Station Category)

FIG. 16 is a schematic diagram illustrating LTE mobile station categoryinformation according to the related art. FIG. 16 shows that there arefive LTE mobile station categories (Category 1 to Category 5).Additionally, FIG. 16 shows that the downlink (DL)/uplink (UL) datatransmission speed (buffer bit rate) of the mobile station apparatus, adownlink (DL)/uplink (UL) modulation scheme of the mobile stationapparatus, and the number of downlink MIMO streams (for example, thenumber of reception antennas) are determined by the LTE mobile stationcategories.

FIG. 16 shows, for example, in the case of the LTE mobile stationcategory 5 (Category 5), that the downlink data transmission speed ofthe mobile station apparatus is “300 Mbps,” the uplink data transmissionspeed thereof is “75 Mbps,” the downlink modulation scheme thereof is“QPSK, 16QAM, or 64QAM,” the uplink modulation scheme thereof is “QPSK,16QAM, or 64QAM,” and the number of downlink MIMO streams is “4.”

With use of the transmission and reception apparatus configurationinformation explained in the first embodiment, the configuration of themobile station apparatus belonging to this LTE mobile station categorycan be expressed as follows.

FIG. 17 is a schematic diagram illustrating an example of transmissionand reception apparatus configuration information according to thesecond embodiment of the present invention. In FIG. 17, the maximumbandwidth of transmission and reception CC is fixed to 20 MHz, andtherefore a combination of LTE mobile station apparatuses can beexpressed by up to four (i=1, 2, 3, 4) RF reception branches (one RFreception branch includes one BB demodulation branch) and one RFtransmission branch (one RF transmission branch includes one BBmodulation branch).

(Regarding LTE-A Mobile Station Category)

FIG. 18 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to the secondembodiment. FIG. 18 shows that there are six LIE-A mobile stationcategories (Category A to Category F). Additionally, FIG. 18 shows thatthe downlink (DL)/uplink (UL) data transmission speeds (buffer bitrates) of the mobile station apparatus are determined by the LTE-Amobile station categories. Further, FIG. 18 shows that a range of thenumber of downlink (DL) MIMO streams, a range of the number of downlinkcontinuous/non-continuous CCs, a range of the number of uplink (UL) MIMOstreams, and a range of the number of uplink continuous/non-continuousCCs are determined by the LTE-A mobile station categories.

For example, the data transmission speed in the case of the category Bis “100 Mbps” for the downlink and “75 Mbps” for the uplink, and thisLTE-A mobile station category is applied to, for example, a mobilestation apparatus moving at the high speed. The data transmission speedin the case of the category F is “1000 Mbps” for the downlink and “500Mbps” for the uplink, and this LTE-A mobile station category is appliedto, for example, a mobile station apparatus which is fixed or moving atthe very low speed.

Additionally, in FIG. 18, for example, the number of downlink MIMOstreams is determined as the range of 8, 4, 2, and 1, and the number ofuplink MIMO streams is determined as the range of 4, 2, and 1. In FIG.18, additionally, the number of downlink CCs is determined as the rangeof 1 to 5, and the number of uplink CCs is determined as the range of 1to 2.

In the case of the LTE, the maximum data transmission speed is “75 Mbps”(in the case of 64QAM) for the CC having the bandwidth of 20 MHz in oneuplink/downlink MIMO stream (see FIG. 16). Therefore, the number ofuplink/downlink MIMO streams and the number of CCs, which are shown inFIG. 18, are in such a relationship as can satisfy the data transmissionspeed.

For example, in the case of the category B, in order to satisfy thedownlink data transmission speed of “100 Mbps,” the number of downlinkMIMO streams “4” is correlated to the number of downlink CCs “1,” thenumber of downlink MIMO streams “2” is correlated to the number ofdownlink CCs “1,” or the number of downlink MIMO streams “1” iscorrelated to the number of downlink CCs “2” to “5.” For example, if thenumber of downlink MIMO streams is “4,” the maximum downlinktransmission speed is 300 Mbps (4 pieces.times.75 Mbps) as long as thenumber of downlink CCs is “1,” thereby satisfying the transmission speedof 100 Mbps. Additionally, for example, if the number of downlink MIMOstreams is “1,” the maximum downlink transmission speed is 375 Mbps (5pieces.times.75 Mbps) as long as the number of downlink CCs is “5,”thereby satisfying the transmission speed of 100 Mbps.

Further, 16QAM which is a modulation scheme with the low modulationlevel is selected if the number of downlink MIMO streams is “4” and thenumber of downlink CCs is “1” (the maximum transmission speed 300 Mbps),thereby satisfying the data transmission speed. Moreover, 64QAM which isa modulation scheme with the high modulation level is selected if thenumber of downlink MIMO streams is “1” and the number of downlink CCs is“2” (the maximum transmission speed 150 Mbps), thereby satisfying thedata transmission speed.

Similarly, in the case of the category B, in order to satisfy the uplinkdata transmission speed of “75 Mbps,” the number of uplink MIMO streams“4” is correlated to the number of uplink CCs “1,” the number of uplinkMIMO streams “2” is correlated to the number of uplink CCs “1,” or thenumber of uplink MIMO streams “1” is correlated to the number of uplinkCCs “1” or “2.” For example, if the number of uplink MIMO streams is“2,” the maximum uplink transmission speed is 150 Mbps (2pieces.times.75 Mbps) as long as the number of downlink CCs is “1,”thereby satisfying the transmission speed of 75 Mbps. Additionally, forexample, if the number of uplink MIMO streams is “1,” the maximum uplinktransmission speed is 75 Mbps (1 piece.times.75 Mbps) as long as thenumber of uplink CCs is “1,” thereby satisfying the transmission speedof 75 Mbps.

Further, 16QAM which is a modulation scheme with the low modulationlevel is selected if the number of uplink MIMO streams is “2” and thenumber of uplink CCs is “1” (the maximum transmission speed 150 Mbps),thereby satisfying the data transmission speed. Moreover, 64QAM which isa modulation scheme with the high modulation level is selected if thenumber of uplink MIMO streams is “1” and the number of uplink CCs is “1”(the maximum transmission speed 75 Mbps), thereby satisfying the datatransmission speed.

The LTE-A mobile station categories (Category shown in FIG. 18) of thepresent invention are characterized by being correlated to the number ofdownlink CCs, in other words, by being managed by the number of downlinkCCs.

The LTE-A mobile station categories of the present invention are notlimited to the example shown in FIG. 18, as long as the number ofdownlink MIMO streams is correlated to the number of downlink CCsaccording to the maximum data transmission speed, so as to satisfy themaximum data transmission speed. Additionally, the number of LTE-Amobile station categories is not limited to the example shown in FIG. 18(six), and may be greater or smaller than that of the example. Further,the category 1 of the LTE mobile station categories is included in thecategory A of the LTE-A mobile station categories.

(Limitation of Configuration of LTE-A Mobile Station Apparatus)

Regarding the configurations of the RF transmission branch and the BBmodulation branch of the LTE-A mobile station apparatus, the SC (SingleCarrier)-FDMA transmission scheme is suitable if backward compatibilitywith the LTE system and PAPR (Peak to Average Power Ratio) of RFtransmission signals, which affects the power amplifier PA included inthe radio transmitter a16, are in consideration. If the number of uplinkcontinuous/non-continuous CCs is limited to two, the configuration ofthe LTE-A mobile station apparatus can be considered to include two RFtransmission branches (one RF transmission branch includes one BBmodulation branch having up to 40 MHz baseband frequency bandwidth).

Additionally, regarding frequency bands, there are various demands frommobile telephone service providers, and there is a tendency to limit thenumber of frequency bands to up to three according to the configurationof a mobile station apparatus. For example, even if the frequency bandnumbers are limited to the frequency band numbers 3, 1, and 7 in the FDDmode (see FIG. 6) or the frequency band numbers 34, 29, and 40 in theTDD mode (see FIG. 6), and if the number of downlink MIMO streams iseight (eight reception antennas), the number of RF reception branchesbecomes 24, and therefore the hardware configuration, the size, and theconsumption power of the mobile station apparatus are significantlyproblematic. If LTE-A mobile stations are categorized according to thenumber of frequency bands, a category of an upper-class mobile station(such as a 1000 Mbps class mobile station apparatus) is the maximumconfiguration (High End Product) of mobile station apparatuses. It isimpossible to satisfy demands of users, for example, to provide alow-cost mobile station apparatus that belongs to the 1000 Mbps classand operates at 3.5 GHz (frequency band number A). For this reason, theLTE-A mobile station categories shown in FIG. 18 are definedirrespective of radio parameters of downlink frequency bands.

Similarly, the number of RF transmission branches depends on the numberof uplink frequency bands. For example, if the number of frequency bandsis three and the number of uplink MIMO streams is four (fourtransmission antennas), the number of RF transmission branches becomestwelve. If LTE-A mobile stations are categorized according to the numberof frequency bands, an upper-class category (such as a 500 Mbps classmobile station apparatus) becomes the maximum configuration of themobile station apparatuses. It is impossible to satisfy demands ofusers, for example, to provide a low-cost mobile station apparatus thatbelongs to the 500 Mbps class and operates at 3.5 GHz (frequency bandnumber A). For this reason, the LIE-A mobile station categories shown inFIG. 18 are defined irrespective of radio parameters of uplink frequencybands.

Hereinafter, LTE-A mobile station categories suitable to a case wherethere are multiple frequency bands are explained. If there are multiplefrequency bands, and if the RF reception branch and the RF transmissionbranch which are compatible with one MIMO stream are configured to becompatible with multiple frequency bands, the following LTE-A mobilestation categories (FIG. 19) are used.

FIG. 19 is a schematic diagram illustrating another example of LTE-Amobile station category relationship information according to the secondembodiment. FIG. 19 is obtained by changing the number ofuplink/downlink MIMO streams (UL/DL Number of MIMO streams to the numberof uplink/downlink data streams (UL/DL Number of DATA streams). FIG. 19shows that there are six LTE-A mobile station categories (Categories Ato F). Additionally, FIG. 19 shows that the downlink (DL)/uplink (UP)data transmission speeds (buffer bit rates) are determined by the LTE-Amobile station categories. Further, FIG. 19 shows that a range of thenumber of downlink (DL) data streams (Number of DATA Streams), a rangeof the number of downlink continuous/non-continuous CCs (Number of CCs),a range of the number of uplink (UL) data streams, and a range of thenumber of uplink continuous/non-continuous CCs are determined by the LTEmobile station categories.

The definition of the number of uplink/downlink data streams is theextension of the number of uplink/downlink MIMO streams. Within the samefrequency band, the number of uplink/downlink data streams is the sameas the number of uplink/downlink MIMO streams. In the case of thedifferent frequency bands, the number of uplink/downlink data streams isthe total of the number of uplink and downlink MIMO streams for eachfrequency band. In other words, similar downlink data transmissionspeeds of mobile station apparatuses can be achieved in the followingtwo cases: the case of the same frequency band where the number ofdownlink MIMO streams is “2” (2.times.2 MIMO) and the number of downlinkCCs is “1”; and the case of two frequency bands where the number ofdownlink data streams is “2” and the number of downlink CCs is “1.”

For example, the data transmission speed in the case of the category Bis “100 Mbps” for the downlink and “75 Mbps” for the uplink, and thisLTE-A mobile station category is applied to, for example, a mobilestation apparatus moving at the high speed. The data transmission speedin the case of the category F is “1000 Mbps” for the downlink and “500Mbps” for the uplink, and this LTE-A mobile station category is appliedto, for example, a mobile station apparatus which is fixed or moving atthe very low speed.

Additionally, in FIG. 19, for example, the number of downlink datastreams is determined as the range of 8, 4, 2, and 1, and the number ofuplink data streams is determined as the range of 4, 2, and 1. In FIG.19, additionally, the number of downlink CCs is determined as the rangeof 1 to 5, and the number of uplink CCs is determined as the range of 1to 2.

In the case of LTE, the maximum data transmission speed is “75 Mbps” (inthe case of 64QAM) for the CC having the 20 MHz bandwidth in oneuplink/downlink data stream (see FIG. 16). Therefore, the number ofuplink/downlink data streams and the number of CCs, which are shown inFIG. 19, are in such a relationship as can satisfy the data transmissionspeed.

For example, in the case of the category B, in order to satisfy thedownlink data transmission speed of “100 Mbps,” the number of downlinkdata streams “4” is correlated to the number of downlink CCs “1,” thenumber of downlink data streams “2” is correlated to the number ofdownlink CCs “1,” or the number of data MIMO streams “1” is correlatedto the number of downlink CCs “2” to “5.” For example, if the number ofdownlink data streams is “4,” the maximum downlink transmission speed is300 Mbps (4 pieces×75 Mbps) as long as the number of downlink CCs is“1,” thereby satisfying the transmission speed of 100 Mbps.Additionally, for example, if the number of downlink data streams is“1,” the maximum downlink transmission speed is 375 Mbps (5 pieces×75Mbps) as long as the number of downlink CCs is “5,” thereby satisfyingthe transmission speed of 100 Mbps.

Further, 16QAM which is a modulation scheme with the low modulationlevel is selected if the number of downlink data streams is “4” and thenumber of downlink CCs is “1” (the maximum transmission speed 300 Mbps),thereby satisfying the data transmission speed. Moreover, 64QAM which isa modulation scheme with the high modulation level is selected if thenumber of downlink data streams is “1” and the number of downlink CCs is“2” (the maximum transmission speed 150 Mbps), thereby satisfying thedata transmission speed. Similar explanations apply to the uplink.

The LTE-A mobile station categories (Category shown in FIG. 19) of thepresent invention are characterized by being correlated to the number ofdata streams, in other words, by being managed by the number of datastreams.

The LTE-A mobile station categories of the present invention are notlimited to the example shown in FIG. 19, as long as the number ofdownlink data streams is correlated to the number of downlink CCsaccording to the maximum data transmission speed, so as to satisfy themaximum data transmission speed, as explained above. Additionally, thenumber of LTE-A mobile station categories is not limited to the exampleshown in FIG. 19 (six), and may be greater or smaller than that of theexample. Further, the category 1 of the LTE mobile station categories isincluded in the category A of the LTE-A mobile station categories.

Modified Example 1

Regarding the LTE-A mobile station category relationship information ofthe present invention, the number of combinations of the number of datastreams and the number of continuous/non-continuous CCs may bedecreased. For example, the number of combinations including the numberof data stream “1” may be decreased as shown in FIG. 20.

FIG. 20 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to the modifiedexample 1 of the second embodiment. If the LTE-A mobile stationcategories shown in FIG. 20 is compared to the LTE-A mobile stationcategories shown in FIG. 19, the difference is that the combinations ofthe number of data streams “1” and the number ofcontinuous/non-continuous CCs are deleted for the downlink (DL)/uplink(UL) in the case of category B and for the downlink in the case of thecategory C, which are shown in FIG. 20.

Modified Example 2

Additionally, the BB frequency bandwidth of the BB demodulation branchof the actual mobile station apparatus A2 (FIG. 7) is the minimum 20MHz. Therefore, regarding the mobile station apparatus A2, for example,the BB frequency bandwidth may be switched between 20 MHz and 40 MHzusing the digital filter a133 and the FFT unit a136 for limitingreception bands shown in FIG. 3, thereby switching between one logicalCC and two logical CCs to perform reception. Here, the logical CCindicates one CC having the 20 MHz bandwidth. Further, in this case, theBB frequency bandwidth is referred to as a physical CC. The same conceptapplies to the uplink.

If the BB frequency bandwidth is limited to up to two uplink/downlinkcontinuous logical CCs, that is, up to 40 MHz in consideration of a testcase of the mobile station apparatus, the LTE-A mobile station categorybecomes as shown in FIG. 21.

FIG. 21 is a schematic diagram illustrating an example of LTE-A mobilestation category relationship information according to a modifiedexample 2 of the second embodiment. If the LTE-A mobile station categoryrelationship information shown in FIG. 21 is compared to the LTE-Amobile station category relationship information shown in FIG. 20, thedifference is that in the case of FIG. 21, the combinations of thenumber of data streams and the number of continuous/non-continuous CCs(Number of CC) “5” are deleted for downlink (DL) of the categories D, E,and F.

Modified Example 3

Additionally, as shown in FIG. 21, the number of combinations of thenumber of data streams and the number of continuous/non-continuous CCsis decreased compared to FIG. 20. However, the configuration of a mobilestation apparatus cannot be perfectly identified by the LTE-A mobilestation category shown in FIG. 21. For example, for the LTE-A mobilestation categories B to F, it cannot be determined whether or not thefrequency bands correlated to the number of the data streams “2” areidentical. Further limitation is needed. For example, the frequency bandis limited to the same frequency band as shown in FIG. 22, thus makingthe number of combinations of the number of data streams and the numberof continuous/non-continuous CCs being one for each LTE-A mobile stationcategory.

(Regarding Configuration of Mobile Station Apparatus A2)

FIG. 23 is a schematic block diagram illustrating a configuration of themobile station apparatus A2 according to the second embodiment. If themobile station apparatus A2 according to the second embodiment (FIG. 23)is compared to the mobile station apparatus A1 according to the firstembodiment (FIG. 10), a controller A202, an ASN encoder A205, andcategory information storing unit A207 differ. However, otherconstituent elements (the transmission and reception apparatus A101, theassignment information storing unit A103, and the RRC message generatorA106) have the same functions as those of the first embodiment.Explanations of the same functions as those of the first embodiment areomitted here.

The category information storing unit A207 stores in a memory, LTE-Amobile station category information (Categories shown in FIGS. 18 to22), that is, the reference numerals A to F associated with the LTE-Amobile station categories A to F, integers 1 to 6, or information of 3bits. The LTE-A mobile station category information can be previouslyset at the time of factory shipment, sale, or initial use of a user,according to the mobile station apparatus configuration, and be writtenin the category information storing unit A207. Additionally, the LTE-Amobile station category information can be associated with mobilestation apparatus individual information, such as the bodyidentification number, the serial number, or the manufacturing number ofa mobile station apparatus. For example, FIG. 14 shows that one RFreception branch (RX1) includes two BB demodulation branches (BB_DM1,BB_DM2), and one RF transmission branch 1 (TX1) includes one BBmodulation branch (BB_MD1). Therefore, with respect to FIG. 21, theinformation of the LTE-A mobile station category B is written in thecategory information storing unit A207. Additionally, with respect toFIG. 22, the information of the LTE-A mobile station category A iswritten in the category information storing unit A207.

The controller A202 controls each unit of the mobile station apparatusA2. For example, the controller A202 receives uplink/downlink radioresource information assigned by the base station apparatus B, andstores the received radio resource information in the assignmentinformation storing unit A103. The controller A202 reads the radioresource information from the assignment information storing unit A103,and controls transmission and reception. Additionally, the controllerA202 outputs, to the ASN encoder A205, the LTE-A mobile station categoryinformation stored in the category information storing unit A207.

The ASN encoder A205 converts the LTE-A mobile station categoryinformation received from the controller A202 into abstract syntaxnotation 1 (ASN. 1) to perform encoding, and outputs the encodedinformation to the RRC message generator A106. The details of theprocess performed by the ASN encoder A205 will be explained later withthe RRC message generation process.

The RRC message generator A106 generates an LTE-A mobile stationcommunication capability message (UE-Advanced EUTRA-Capability)including the information received from the ASN encoder A105. Then, theRRC message generator A106 outputs the LTE-A mobile stationcommunication capability message to the transmission and receptionapparatus A101 as part of an RRC message included in control data. Thedetails of the process performed by the RRC message generator A106 willbe explained later with the RRC message generation process.

The transmission and reception apparatus A101 processes, by the RFtransmission branch j, the RRC message received from the RRC messagegenerator A106, and transmits the processed message to the base stationapparatus B.

Additionally, the assignment information storing unit A103, the RRCmessage generator A106, the controller A202, the ASN encoder A205, andthe category information storing unit A207 may be included in anintegrated circuit chip. Alternatively, part of these units may beincluded in the transmission and reception apparatus A101, or all ofthese units may be included in an integrated circuit chip. Theconfiguration is not limited.

(Regarding RRC Message Generation Process)

Hereinafter, the RRC message generation process performed by the ASNencoder A205 and the RRC message generator A106 is explained.

FIG. 24 is a schematic diagram illustrating an example of LTE-A mobilestation category information (ue-Category shown in FIG. 24) included inthe LTE-A mobile station communication capability message (UE-AdvancedEUTRA-Capability shown in FIG. 24) converted into the abstract syntaxnotation 1 according to the second embodiment. In FIG. 24, values “1” to“6” (INTEGER (1 . . . 6)) of the mobile station category information(ue-Category) indicate the LTE-A mobile station categories A to F (seeFIGS. 18 to 21), respectively. With respect to FIG. 22, values of themobile station category information (ue-Category) are “1” to “4”(INTEGER (1 . . . 4)), respectively.

Regarding the base station apparatus B, the controller B assignsuplink/downlink radio resources based on the mobile station categoryinformation as shown in FIG. 22 (see FIG. 15). For example, thecontroller B102 decodes the LTE-A mobile station communication message(UE-Advanced EUTRAN-Capability shown in FIG. 24) from the RRC messagereceived from the mobile station apparatus A2 to extract mobile stationcategory information (ue-Category shown in FIG. 24). Based on the mobilestation category information, the controller B202 determines assignmentof uplink/downlink local CCs to the mobile station apparatus A2 andassignment of radio resources in each of the assigned uplink/downlinklocal CCs.

For example, if the base station apparatus B has such communicationcapability as can achieve the compatibility with the LTE-A mobilestation category C, that is, such communication capability that the basestation apparatus B can perform, in the frequency band 1 (2 GHz shown inFIG. 2), transmission of f1_R1 to f1_R4 of the downlink local CCs andreception of f1_T1 to f1_T4 of the uplink local CC, while the mobilestation apparatus A2 has such a transmission and reception apparatusconfiguration as that of the LTE-A mobile station category A, that is,such a configuration that the mobile station apparatus A2 can perform,in the frequency band 1 (2 GHz shown in FIG. 2), reception of f1_R1 andf1_R2 of the downlink local CCs and transmission of f1_T1 of the uplinkCC, the controller B102 assigns to the mobile station apparatus A2,uplink/downlink local CCs, that are, f1_R1 and f1_R2 of the downlinklocal CCs and f1_T1 of the uplink local CC, and reports the assignmentat the time of the initial access by the mobile station apparatus A2.The controller B102 assigns to the downlink local CCs having thefrequencies f1_R1 and f1_R2, downlink radio resources, that are,downlink resource blocks RB for the mobile station apparatus A2 toreceive mobile station apparatus data. Further, the controller B102assigns to the uplink local CC having the frequency f1_T1, uplink radioresources, that are, uplink resource blocks RB for the mobile stationapparatus A2 to transmit mobile station apparatus data. The controllerB102 of the base station apparatus B compares the mobile stationapparatus category information (ue-Category shown in FIG. 24) from themobile station apparatus A2 to the transmission and reception apparatusconfiguration information of the base station apparatus B, and therebycan assign adequate downlink/uplink radio resources to the mobilestation device A2 within the communication capabilities of the basestation apparatus and the mobile station apparatus. The frequency bandinformation with which the mobile station apparatus A2 is compatible,such as the frequency band number, can be reported to the base stationapparatus B through another RRC message, as in the case of the relatedart.

The controller B102 stores, in the assignment information storing unitB103, the assignment information of the determined uplink/downlink localCCs, and the assignment information of the radio resources assigned tothe uplink/downlink local CCs. The controller B102 reads, from theassignment information storing unit B103, the assignment information ofthe determined uplink/downlink local CC, and the assignment informationof the radio resources assigned to uplink/downlink local CC, and therebycontrols transmission and reception. Additionally, the controller B102transmits, to the mobile station apparatus A2 through the transmissionand reception apparatus B102, the assignment information of thedetermined uplink/downlink local CC, and the assignment information ofthe radio resources assigned to the uplink/downlink local CCs.

As explained above, according to the second embodiment, the mobilestation apparatus A2 transmits, to the base station apparatus B, theLTE-A mobile station category information (ue-Category shown in FIG. 24)that can be used for communication with the base station apparatus B.Additionally, the mobile station apparatus A2 communicates with the basestation apparatus B using the uplink/downlink radio resources assignedby the base station apparatus B based on the LTE-A mobile stationcategory information. Thereby, the communication system of the secondembodiment can assign uplink/downlink radio resources adequate forcommunication between the mobile station apparatus A2 and the basestation apparatus B.

Modified Example

FIG. 25 is a schematic diagram illustrating another example of the LTE-Amobile station category information converted into the abstract syntaxnotation 1 according to a modified example 3 of the second embodiment.In FIG. 25, among the values “1” to “11” (INTEGER (1 . . . 11)) of themobile station apparatus category information (ue-Category shown in FIG.25) included in the LTE mobile station communication capability message(UE-EUTRAN-Capability) of the related art, the values of “1” to “5”indicate the LTE mobile station categories 1 to 5 of the related art,respectively. The values “6” to “11” respectively indicating the LTE-Amobile station categories A to F are added thereto, thus expressing theLTE-A mobile station capability message.

As explained above, according to the second embodiment, the mobilestation apparatus A2 transmits, to the base station apparatus B, theLTE-A mobile station category information (ue-Category shown in FIG. 24or 25) that can be used for communication with the base stationapparatus B. Additionally, the mobile station apparatus A2 communicateswith the base station apparatus B using the uplink/downlink radioresources assigned by the base station apparatus B based on the LTE-Amobile station category information. Thereby, the communication systemof the second embodiment can assign uplink/downlink radio resourcesadequate for communication between the mobile station apparatus A2 andthe base station apparatus B.

The second embodiment is the same as the related art with respect to theconfiguration that the LTE-A mobile station category information(ue-Category shown in FIG. 24 or 25) is defined, and the mobile stationcategory information is transmitted to the base station apparatus.However, the LTE-A mobile station categories are managed by the numberof data streams and the number of local CCs. Thereby, the base stationapparatus can assign adequate downlink/uplink radio resources to themobile station apparatus within the communication capabilities of thebase station apparatus and the mobile station apparatus, as in the caseof the related art.

In the first embodiment, mobile station apparatus configurationinformation is generated with respect to a combination of LTE-A mobilestation apparatus configurations in order to achieve the compatibilitywith various LTE-A technical elements such as the above (a) to (1), andthe generated mobile station apparatus configuration information istransmitted to the base station apparatus B. Thereby, the base stationapparatus B can perform, according to the mobile station apparatusconfiguration information, assignment of adequate uplink/downlink radioresources that can bring out the adequate performance of the mobilestation apparatus A1 compatible with various LTE-A technical elements.In contrast to the above feature of the first embodiment, in the secondembodiment, the LTE-A mobile station categories are defined according tothe number of data streams and the number or logical CCs, thereby addinglimitation to the combinations of the LTE-A mobile station apparatusconfigurations. For this reason, limitation is added to thecompatibility with various LTE-A technical elements. However, theinformation amount of the RRC message including the LTE-A mobile stationcategories A to F (see FIGS. 19 to 22) (such as the number of bits, theinformation amount of uplink signaling control signals, or overhead ofradio resources) can be reduced. The limitation to the combinations ofthe LTE-A mobile station apparatus configurations can achieve areduction in circuit complicity, lower power consumption, lower cost,miniaturization, an increase in productivity, and the like.

Third Embodiment

Hereinafter, a third embodiment of the present invention is explained indetail with reference to the drawings.

In the third embodiment, a mobile station apparatus generates an LTE-Amobile station communication capability message including thetransmission and reception apparatus configuration information(UE-RF-Capability) according to the first embodiment and the mobilestation category information (ue-Category) according to the secondembodiment.

A conceptual diagram of a communication system is the same as FIG. 1 ofthe first embodiment, and therefore explanations thereof are omittedhere. Each of the mobile station apparatuses A11 and A12 according tothe third embodiment is referred to as a mobile station apparatus A3.

(Regarding Configuration of Mobile Station Apparatus A3)

FIG. 26 is a schematic block diagram illustrating a configuration of themobile station apparatus A3 according to the third embodiment. If themobile station apparatus A3 according to the third embodiment (FIG. 26)is compared to the mobile station apparatus A1 according to the firstembodiment (FIG. 10), a controller A302 and an ASN encoder A305 differ.However, other constituent elements (the transmission and receptionapparatus A101, the assignment information storing unit A103, the RRCmessage generator A106, the category information storing unit A207, andthe transmission and reception apparatus information storing unit A104)have the same functions as those of the first and second embodiments.Explanations of the same functions as those of the first and secondembodiments are omitted here.

The controller A302 controls each unit of the mobile station apparatusA3. For example, the controller A302 receives radio resource informationassigned by the base station apparatus B, and stores the received radioresource information in the assignment information storing unit A103.The controller A302 reads the radio resource information from theassignment information storing unit A103, and controls transmission andreception.

Additionally, the controller A302 outputs, to the ASN encoder A205, thetransmission and reception apparatus configuration information stored inthe transmission and reception apparatus configuration informationstoring unit A104, and the LTE-A mobile station category informationread from the category information storing unit A207.

The ASN encoder A305 converts the LTE-A mobile station categoryinformation received from the controller A302 into abstract syntaxnotation 1 (ASN. 1) to perform encoding, and outputs the encodedinformation to the RRC message generator A106. The details of theprocess performed by the RRC message generator A106 will be explainedlater with the RRC message generation process. The transmission andreception apparatus A101 processes, by the RF transmission branch j, theRRC message received from the RRC message generator A106, and transmitsthe processed RRC message to the base station apparatus B.

Additionally, the assignment information storing unit A103, thetransmission and reception apparatus configuration information storingunit A104, the RRC message generator A106, the controller A302, the ASNencoder A305, and the category information storing unit A207 may beincluded in an integrated circuit chip. Alternatively, part of theseunits may be included in the transmission and reception apparatus A101,or all of these units may be included in an integrated circuit chip.Thus, the configuration is not limited.

(Regarding RRC Message Generation Process)

Hereinafter, the RRC message generation process performed by the ASNencoder A305 and the RRC message generator A106 is explained.

FIG. 27 is a schematic diagram illustrating an example of the LTE-Amobile station communication capability message. In FIG. 27, the LTE-Amobile station communication capability message (UE-AdvancedEUTRA-Capability shown in FIG. 27) includes mobile station categoryinformation (ue-Category shown in FIG. 24) and transmission andreception apparatus configuration information (UE-RF-Capability shown inFIG. 12).

Additionally, in FIG. 27, values “1” to “6” (INTEGER (1 . . . 6) of themobile station category information (ue-Category shown in FIG. 27)indicate the LTE-A mobile station categories A to F (see FIGS. 18 to21), respectively. Similarly, values of the mobile station categoryinformation (ue-Category), such as “1” to “4” (INTEGER (1 . . . 4) inthe case of FIG. 22, and “1” to “11” (INTEGER (1 . . . 11)) in the caseof FIG. 25, indicate mobile station categories.

Regarding the base station apparatus B, the controller B102 assignsuplink/downlink radio resources based on mobile station categoryinformation as shown in FIG. 21 and the transmission and receptionapparatus configuration information (see FIG. 15). For example, thecontroller B102 decodes and extracts mobile station category information(ue-Category shown in FIG. 27) and transmission and reception apparatusconfiguration information (UE-RF-Capability shown in FIG. 12) from theRRC message received from the mobile station apparatus A3. Based on themobile station category information and the transmission and receptionapparatus configuration information which are extracted, the controllerB302 determines assignment of uplink/downlink radio resources to themobile station apparatus A3.

For example, the controller B102 extracts the LTE-A mobile stationcategory B from the mobile station category information, and extracts aradio parameter of the mobile station apparatus configuration as shownin FIG. 28 from the transmission and reception apparatus configurationinformation. The buffer size of uplink/downlink data processing softwareof the mobile station apparatus A3 (the maximum downlink data speed 100Mbps, the maximum uplink data speed 75 Mbps) can be determined by theLTE-A mobile station apparatus category B. Additionally, it can bedetermined by the radio parameter shown in FIG. 28 that the mobilestation apparatus A3 has such a configuration that two BB demodulationbranches (BB_DM1, BB_DM2) are included in one RF reception branch (RX1)in the frequency band 1 (FIG. 2, 2 GHz, the frequency band number 1),and that one BB modulation branch (BB_MD1) is included in one RFtransmission branch 1 (TX1).

If the base station apparatus B has such communication capability as canachieve the compatibility with the LTE-A mobile station category C, thatis, such communication capability that the base station apparatus B canperform, in the frequency band 1 (FIG. 2, 2 GHz, the frequency bandnumber 1), transmission of f1_R1 to f1_R4 of the downlink local CCs andreception of f1_T1 to f1_T4 of the uplink local CCs, the controller B102assigns uplink/downlink local CCs to the mobile station apparatus A3,and reports the assignment to the mobile station apparatus A3 at thetime of the initial access by the mobile station apparatus A3. For thedownlink, since the mobile station apparatus A3 has configuration suchthat two demodulation branches are included in one RF reception branchwith respect to the frequency band 1, the controller B102 assigns to themobile station apparatus A2, for example, f1_R1 and f1_R2 of continuousdownlink local CCs, or f1_R1 and f1_R4 of non-continuous downlink localCCs, in consideration of user load in the downlink, that is, the loadbalance of f1_R1 to f1_R4 of the downlink local CCs. For the uplink,since the mobile station apparatus A3 has such a configuration that oneBB demodulation branch is included in one RF transmission branch withrespect to the frequency band 1, the controller B102 assigns, forexample, f1_R2 of the uplink local CC to the mobile station apparatus A3in consideration of user load in the uplink, that is, the load balanceof f1_T1 to f1_T4 of the uplink local CCs (if there is compatibilitywith multiple uplink local CCs, continuous/non-continuous CCs can beassigned similarly to the downlink).

For example, in the case of continuous downlink local CCs, thecontroller B302 assigns to the downlink local CCs having the frequenciesf1_R1 and f1_R2, downlink radio resources, that are, downlink resourceblocks RB for the mobile station apparatus A3 to receive mobile stationapparatus data. Further, the controller B302 assigns to the uplink localCC having the frequency f1_T1, uplink radio resources, that are, uplinkresource blocks RB for the mobile station apparatus A2 to transmitmobile station apparatus data. The controller B102 compares the mobilestation apparatus category information and the transmission andreception apparatus configuration information from the mobile stationapparatus A3 to the transmission and reception apparatus configurationinformation of the base station apparatus B, and thereby can assignadequate downlink/uplink radio resources to the mobile station device A3within the communication capabilities of the base station apparatus andthe mobile station apparatus.

Additionally, for example, the controller B102 extracts the LTE-A mobilestation category B from the mobile station category information, andextracts a radio parameter of the mobile station apparatus configurationas shown in FIG. 29 from the transmission and reception apparatusconfiguration information. The buffer size of uplink/downlink dataprocessing software of the mobile station apparatus A3 (the maximumdownlink data speed 100 Mbps, the maximum uplink data speed 75 Mbps) canbe determined by the LTE-A mobile station apparatus category B.Additionally, it can be determined by the radio parameter shown in FIG.29 that the mobile station apparatus A3 has such a configuration thatone BB demodulation branch (BB_DM1) is included in one RF receptionbranch (RX1) with respect to the frequency band 1 (FIG. 2, 2 GHz, thefrequency band number 1), that one BB demodulation branch (BB_DM2) isincluded in one RF reception branch (RX2) with respect to the frequencyband 2 (FIG. 2, 3 GHz, the frequency band number A), and that one BBmodulation branch (BB_MD1) is included in the RF transmission branch 1(TX1) with respect to the frequency band 1 (FIG. 2, 2 GHz, the frequencyband number 1).

If the base station apparatus B has such communication capability as canachieve the compatibility with the LTE-A mobile station category C, thatis, such communication capability that the base station apparatus B canperform, in the frequency band 1 (FIG. 2, 2 GHz, the frequency bandnumber 1), transmission of f1_R1 to f1_R4 of the downlink local CCs andreception of f1_T1 to f1_T4 of the uplink local CCs, the controller B102assigns uplink/downlink local CCs to the mobile station apparatus A3,and reports the assignment at the time of the initial access by themobile station apparatus A3. For the downlink, since the mobile stationapparatus A3 has such a configuration that one demodulation branch isincluded in one RF reception branch with respect to the frequency band1, the controller B102 assigns to the mobile station apparatus A3, forexample, f1_R2 of the downlink local CC in consideration of user load inthe downlink, that is, the load balance of f1_R1 to f1_R4 of thedownlink local CCs (if there are multiple downlink local CCs,continuous/non-continuous CCs can be assigned). For the uplink, sincethe mobile station apparatus A3 has such a configuration that one BBdemodulation branch is included in one RF transmission branch withrespect to the frequency band 1, the controller B102 assigns, forexample, f1_T2 of the uplink local CC to the mobile station apparatus A3in consideration of user load in the uplink, that is, the load balanceof f1_T1 to f1_T4 of the uplink local CC (if there is compatibility withmultiple uplink local CCs, continuous/non-continuous CCs can be assignedsimilarly to the downlink).

In the case of continuous downlink local CCs, the controller B302assigns to the downlink local CC having the frequency f1_R2, a downlinkradio resource, that is, a downlink resource block RB for the mobilestation apparatus A3 to receive mobile station apparatus data. Further,the controller B302 assigns to the uplink local CC having the frequencyf1_T2, an uplink radio resource, that is, an uplink resource block RBfor the mobile station apparatus A3 to transmit mobile station apparatusdata. The controller B102 compares the mobile station apparatus categoryinformation and the transmission and reception apparatus configurationinformation from the mobile station apparatus A3 to the transmission andreception apparatus configuration information of the base stationapparatus B, and thereby can assign adequate downlink/uplink radioresources to the mobile station device A3 within the communicationcapabilities of the base station apparatus and the mobile stationapparatus.

The controller B102 stores, in the assignment information storing unitB103, assignment information of the uplink/downlink local CC, andassignment information of the radio resource assigned to theuplink/downlink local CC. The controller B102 reads, from the assignmentinformation storing unit B103, the assignment information of theuplink/downlink local CC, and the assignment information of the radioresource assigned to the assigned uplink/downlink local CC, and therebycontrols transmission and reception. Additionally, the controller B102transmits, to the mobile station apparatus A2 through the transmissionand reception apparatus B101, the assignment information of thedetermined uplink/downlink local CC, and the assignment information ofthe radio resource assigned to the uplink/downlink local CC.

As explained above, according to the third embodiment, the mobilestation apparatus A3 transmits, to the base station apparatus B, theLTE-A mobile station category information and the transmission andreception apparatus configuration information which are included in theLTE-A mobile station communication capability message (UE-AdvancedEUTRAN-Capability shown in FIG. 27) that can be used for communicationwith the base station apparatus B. Additionally, the mobile stationapparatus A3 communicates with the base station apparatus B using theuplink/downlink radio resources assigned by the base station apparatus Bbased on the LTE-A mobile station category information and thetransmission and reception apparatus configuration information. Thereby,the communication system of the third embodiment can assignuplink/downlink radio resources adequate for communication between themobile station apparatus A3 and the base station apparatus B.

Modified Example

As shown in FIGS. 19 to 21, combinations of the number ofuplink/downlink streams and the number of uplink/downlink local CCs aresimilar in part among LTE-A mobile station categories. If combinationsof the number of uplink/downlink streams and the number ofuplink/downlink local CCs differ among LTE-A mobile station categoriesas shown in FIG. 22, the mobile station apparatus A3 may transmit onlyLTE-A mobile station category information to the base station apparatusB, as in the second embodiment. Alternatively, the mobile stationapparatus A3 may transmit, to the base station apparatus B, onlytransmission and reception apparatus configuration information of themobile station apparatus A3 which includes the LTE-A mobile stationcategory information shown in FIG. 21. The base station apparatus B candetermine the LTE-A mobile station category information from thetransmission and reception apparatus configuration information of themobile station apparatus A3.

In contract to the second embodiment where the limitations are added tothe combinations of LTE-A mobile station apparatus configurations bymeans of the definition of the LTE-A mobile station categoryinformation, in the third embodiment, the limited transmission andreception apparatus configuration information which is limited to theLTE-A mobile category information is added thereto, thereby relaxing thelimitation to various LTE-A technical elements such as the above (a) to(l), compared to the second embodiment. However, the information amountof the RRC message including information of LTE-A mobile stationcategories A to F (see FIGS. 19 to 21) and the transmission andreception apparatus configuration information (such as the number ofbits, the information amount of uplink signaling control signals, oroverhead of radio resources) is increased compared to the secondembodiment, but is smaller than in the first embodiment.

Fourth Embodiment

Hereinafter, a fourth embodiment of the present invention is explainedin detail with respect to the drawings.

An example of six LTE-A mobile station categories A to F has been shownin the second embodiment (FIGS. 18 to 21). For example, the example ofFIG. 19 is a case where the numbers of downlink data streams are “8,”“4,” “2,” and “1,” the numbers of uplink data streams are “4,” “2,” and“1,” the frequency bandwidth of one CC is 20 MHz, the maximum number ofdownlink continuous/non-continuous CCs is “5,” and the maximum number ofuplink continuous/non-continuous CCs is “2.” Even in this case, thereare multiple combinations of the number of data streams and the numberof CCs. For example, in the case of FIG. 19, there are 24 typesincluding the combinations of the number of downlink/uplink data streamsand the number of CCs.

In the fourth embodiment, a mobile station apparatus generates an LTE-Amobile station communication capability message including the mobilestation category information (ue-Category shown in FIG. 24) according tothe second embodiment, and the transmission and the reception apparatusconfiguration number (also referred to as abbreviated transmission andreception apparatus configuration information; identificationinformation) that identifies this combination.

A conceptual diagram of a communication system is the same as FIG. 1 ofthe third embodiment, and therefore explanations thereof are omittedhere. Each of the mobile station apparatuses A11 and A12 according tothe fourth embodiment is referred to as a mobile station apparatus A4.

(Regarding Transmission and Reception Apparatus Configuration Number)

FIG. 30 is a schematic diagram illustrating an example of thetransmission and the reception apparatus configuration numberinformation according to the fourth embodiment. FIG. 30 shows thetransmission and the reception apparatus configuration numberinformation in the case where the LTE-A mobile station category is asshown in FIG. 19.

In FIG. 30, the transmission and the reception apparatus configurationnumber information includes items of: the transmission and the receptionapparatus configuration numbers (UE_TRXh, h=1, 2, . . . , H); the numberof data streams (Number of DATA streams); and the number of local CCs(Number of CC). The transmission and the reception apparatusconfiguration number identification information is identificationinformation that identifies a combination of the number of data streamsand the number of CCs with respect to an LTE-A mobile station category.

For example, the transmission and the reception apparatus configurationnumber “1” (UE_TRX1) indicates the combination of the number of datastreams “8” and the number of local CCs “3.”

(Regarding Configuration of Mobile Station Apparatus A4)

FIG. 31 is a schematic block diagram illustrating a configuration of themobile station apparatus A4 according to the fourth embodiment. If themobile station apparatus A4 according to the fourth embodiment (FIG. 31)is compared to the mobile station apparatus A3 according to the firstembodiment (FIG. 26), a controller A402, an ASN encoder A405, and atransmission and reception apparatus configuration number storing unitA404 differ. However, other constituent elements (the transmission andreception apparatus A101, the assignment information storing unit A103,the RRC message generator A106, and the category information storingunit A207) have the same functions as those of the third embodiment.Explanations of the same functions as those of the third embodiment areomitted here.

The transmission and reception apparatus configuration number storingunit A404 stores the transmission and reception apparatus configurationnumber of the mobile station apparatus A4.

The controller A402 controls each unit of the mobile station apparatusA4. For example, the controller A402 receives radio resource informationassigned by the base station apparatus B, and stores the received radioresource information in the assignment information storing unit A103.The controller A402 reads the radio resource information from theassignment information storing unit A103, and controls transmission andreception.

The transmission and reception apparatus configuration number storingunit A404 stores the transmission and reception apparatus configurationnumber in a memory. The transmission and reception apparatusconfiguration number can be previously set at the time of factoryshipment according to a mobile station apparatus configuration, and bewritten to the transmission and reception apparatus configuration numberstoring unit A404.

Additionally, the controller A402 outputs, to the ASN encoder A405, thetransmission and reception apparatus configuration number stored in thetransmission and reception apparatus configuration number storing unitA404, and the LTE-A mobile station category information stored in thecategory information storing unit A207.

The ASN encoder A405 converts the transmission and reception apparatusconfiguration number and the LTE-A mobile station category informationwhich are received from the controller A402 into abstract syntaxnotation 1 (ASN. 1) to perform encoding, and outputs the encodedinformation to the RRC message generator A106. The details of theprocess performed by the RRC message generator A106 will be explainedlater with the RRC message generation process. The transmission andreception apparatus A101 processes, by the RF transmission branch j, theRRC message received from the RRC message generator A106, and transmitsthe processed RRC message to the base station apparatus B.

Additionally, the assignment information storing unit A103, thetransmission and reception apparatus configuration number storing unitA404, the RRC message generator A106, the controller A402, the ASNencoder A405, and the category information storing unit A207 may beincluded in an integrated circuit chip. Alternatively, part of theseunits may be included in the transmission and reception apparatus A101,or all of these units may be included in an integrated circuit chip.Thus, the configuration is not limited.

(Regarding RRC Message Generation Process)

Hereinafter, the RRC message generation process performed by the ASNencoder A405 and the RRC message generator A106 is explained.

FIG. 32 is a schematic diagram illustrating an example of the LTE-Amobile station communication capability message (UE-AdvancedEUTRAN-Capability) according to the fourth embodiment. In FIG. 32, theLTE-A mobile station communication capability message (UE-AdvancedEUTRAN-Capability shown in FIG. 32) includes mobile station categoryinformation (ue-Category) and the abbreviated transmission and receptionapparatus configuration information (ue-nrf-capability).

In FIG. 32, values “1” to “6” (INTEGER (1 . . . 6) of the mobile stationcategory information (ue-Category) indicate the LTE-A mobile stationcategories A to F (see FIGS. 19 to 21), respectively.

Additionally, in FIG. 32, the reception apparatus configuration number(ue-nrx-capability) and the transmission apparatus configuration number(ue-nrx-capability) are substituted in the abbreviated transmission andreception apparatus configuration information (UE-NRF-Capability). Here,the reception apparatus configuration number and the transmissionapparatus configuration number are transmission and reception apparatusconfiguration numbers indicating combinations of the number of datastreams and the number of local CCs which can be received by a receptionbranch and transmitted by a transmission branch, respectively, as shownin FIG. 30.

Modified Example

FIG. 33 is a schematic diagram illustrating another example of the LTE-Amobile station communication capability message converted into theabstract syntax notation 1 according to a modified example of the fourthembodiment. In FIG. 33, among the values “1” to “11” (INTEGER (1 . . .11)) of the mobile station apparatus category information (ue-Categoryshown in FIG. 25) included in the LTE mobile station communicationcapability message (UE-EUTRAN-Capability) of the related art, the valuesof “1” to “5” indicate the LTE mobile station categories 1 to 5 of therelated art. The values “6” to “11” respectively indicating the LTE-Amobile station categories A to F as well as the abbreviated transmissionand reception apparatus configuration information (UE-NRF-Capabilityshown in FIG. 32) are added thereto, thereby expressing the LTE-A mobilestation communication capability message.

Regarding the base station apparatus B, the controller B102 assignsuplink/downlink radio resources based on the mobile station categoryinformation and the abbreviated transmission and reception apparatusconfiguration information as shown in FIGS. 19 to 21 (see FIG. 15). Forexample, the controller B102 decodes the LTE-A mobile stationcommunication message (UE-Advanced EUTRAN-Capability shown in FIG. 32)or the LTE mobile station communication capability message(UE-EUTRAN-Capability shown in FIG. 33) from the RRC message receivedfrom the mobile station apparatus A4 to extract the mobile stationcategory information (ue-Category) and the abbreviated transmission andreception apparatus configuration information (UE-NRF-Capability). Basedon the mobile station category information and the abbreviatedtransmission and reception apparatus configuration information which areextracted, the controller B402 determines assignment of uplink/downlinkradio resources to the mobile station apparatus A4.

For example, the controller B102 extracts the LTE-A mobile stationcategory B from the mobile station category information, and extractsthe reception apparatus configuration number (ue-nrx-capability) “11”and the transmission apparatus con figuration number (ue-nrx-capability)“11” from the abbreviated transmission and reception apparatusconfiguration information. The buffer size of uplink/downlink dataprocessing software of the mobile station apparatus A4 (the maximumdownlink data speed 100 Mbps, the maximum uplink data speed 75 Mbps) canbe determined by the LTE-A mobile station apparatus category B.Additionally, it can be determined by the reception apparatusconfiguration number “11,” the transmission apparatus configurationnumber “11,” and the frequency band 1 (FIG. 2, 2 GHz, the frequency bandnumber 1) received through another RRC message that the mobile stationapparatus A4 has such a configuration that two BB demodulation branches(BB_DM1, BB_DM2) are included in one RF reception branch (RX1) withrespect to the frequency band 1 (FIG. 2, 2 GHz, the frequency bandnumber 1), and that one BB modulation branch (BB_MD1) is included in oneRF transmission branch 1 (TX1).

If the base station apparatus B has such communication capability as canachieve the compatibility with the LTE-A mobile station category C, thatis, such communication capability that the base station apparatus B canperform, in the frequency band 1 (FIG. 2, 2 GHz, the frequency bandnumber 1), transmission of f1_R1 to f1_R4 of the downlink local CCs andreception of f1_T1 to f1_T4 of the uplink local CCs, the controller B102assigns uplink/downlink local CCs to the mobile station apparatus A4,and reports the assignment at the time of the initial access by themobile station apparatus A4. For the downlink, since the mobile stationapparatus A4 has such a configuration that two demodulation branches areincluded in one RF reception branch with respect to the frequency band1, the controller B102 assigns to the mobile station apparatus A4, forexample, f1_R1 and f1_R2 of continuous downlink local CCs, or f1_R1 andf1_R4 of non-continuous downlink local CCs, in consideration of userload in the downlink, that is, the load balance of f1_R1 to f1_R4 of thedownlink local CCs. For the uplink, since the mobile station apparatusA4 has such a configuration that one BB demodulation branch is includedin one RF transmission branch with respect to the frequency band 1, thecontroller B102 assigns, for example, f1_R2 of the uplink local CC tothe mobile station apparatus A4 in consideration of user load in theuplink, that is, the load balance of f1_T1 to f1_T4 of the uplink localCCs (if there is compatibility with multiple uplink local CCs,continuous/non-continuous CCs can be assigned similarly to thedownlink).

For example, in the case of continuous downlink local CCs, thecontroller B402 assigns to the downlink local CCs having the frequenciesf1_R1 and f1_R2, downlink radio resources, that are, downlink resourceblocks RBs for the mobile station apparatus A4 to receive mobile stationapparatus data. Further, the controller B402 assigns to the uplink localCC having the frequency f1_T2, uplink radio resources, that are, uplinkresource blocks RBs for the mobile station apparatus A4 to transmitmobile station apparatus data. The controller B102 compares the mobilestation apparatus category information and the transmission andreception apparatus configuration information from the mobile stationapparatus A4 to the transmission and reception apparatus configurationinformation of the base station apparatus B, and thereby can assignadequate downlink/uplink radio resources to the mobile station device A4within the communication capabilities of the base station apparatus andthe mobile station apparatus.

The controller B102 stores, in the assignment information storing unitB103, assignment information of the uplink/downlink local CC, andassignment information of the radio resource assigned to theuplink/downlink local CC. The controller B102 reads, from the assignmentinformation storing unit B103, the assignment information of theuplink/downlink local CC, and the assignment information of the radioresource assigned to the uplink/downlink local CC, and thereby controlstransmission and reception. Additionally, the controller B102 transmits,to the mobile station apparatus A4 through the transmission andreception apparatus B101, the assignment information of the determineduplink/downlink local CC, and the assignment information of the radioresource assigned to uplink/downlink local CC.

As explained above, according to the fourth embodiment, the mobilestation apparatus A4 transmits, to the base station apparatus B, theLTE-A mobile station category information and the transmission andreception apparatus configuration information which can be used forcommunication with the base station apparatus B. Additionally, themobile station apparatus A4 communicates with the base station apparatusB using the uplink/downlink radio resources assigned by the base stationapparatus B based on the LTE-A mobile station category information andthe transmission and reception apparatus configuration information.Thereby, the communication system of the fourth embodiment can assignuplink/downlink radio resources adequate for communication between themobile station apparatus A4 and the base station apparatus B.

In contract to the third embodiment where the limited transmission andreception apparatus configuration information which is limited to theLTE-A mobile station category information is added, in the fourthembodiment, the limited abbreviated transmission and reception apparatusconfiguration information which is limited to the LTE-A mobile categoryinformation is added thereto, thereby relaxing the limitation to variousLTE-A technical elements such as the above (a) to (l) compared to thethird embodiment. Further, the information amount of the RRC messageincluding information of the LTE-A mobile station categories A to F (seeFIGS. 19 to 21) and the abbreviated transmission and reception apparatusconfiguration information (such as the number of bits, the informationamount of uplink signaling control signals, or overhead of radioresources) is smaller than in the third embodiment.

A computer may implement part of the mobile station apparatuses A1, A2,A3, and A4 and the base station apparatus B, such as: the controllersA102. A202, A302, and A402; the ASN encoders A105, A205, A305, and A405;the category information storing unit A207; and the controller B102. Inthis case, a computer-readable recording medium may store a program forimplementing these control functions, so that a computer system readsand executes the program stored in the recording medium and therebyimplement the control functions. Here, the “computer system” is acomputer system included in the mobile station apparatuses A1, A2, A3,and A4, or the base station apparatus B, and includes OS and hardware,such as a peripheral apparatus. Additionally, the “computer-readablerecording medium” includes a portable medium such as a flexible disc, amagneto-optical disc, a ROM, and a CD-ROM, and a storage apparatus suchas a hard disk built in the computer system. Further, the“computer-readable recording medium” may include a medium thatdynamically stores a program for a short period of time, such as acommunication line used when a program is transmitted via a network suchas the Internet or a communication line such as a telephone line.Additionally, the “computer-readable recording medium” may include amedium that stores a program for a predetermined period of time, such asa volatile memory built in a computer system serving as a server orclient when the program is transmitted via a network such as theInternet or a communication line such as a telephone line. Moreover, theprogram may be a program for implementing part of the aforementionedfunctions. Further, the program may be a program that can implement theaforementioned functions in combination with a program already recordedin the computer system.

Additionally, part or all of the mobile station apparatuses and basestation apparatus according to the aforementioned embodiments may beimplemented typically by an LSI that is an integrated circuit. Each ofthe functional blocks of the mobile station apparatuses and the basestation apparatus may be individually made into a chip. Alternatively,part or all of the functional blocks may be integrated and made into achip. Further, a method of forming the integrated circuit is not limitedto the LSI, and the integrated circuit may be implemented by a dedicatedcircuit or a general-purpose processor. Moreover, if technology offorming an integrated circuit to be substituted with the LSI isdeveloped along with the progress of semiconductor technology, anintegrated circuit formed by that technology may be used.

Although the embodiments of the present invention have been explainedwith reference to the drawings, specific configurations are not limitedthereto. Various design modifications may be made without departing fromthe scope of the present invention.

INDUSTRIAL APPLICABILITY

The present invention is suitable to be used for a mobile stationapparatus and a wireless communication system for mobile communication,and similar technology, and enables assignment of radio resourcesadequate for communication between the mobile station apparatus and abase station apparatus.

DESCRIPTION OF REFERENCE SYMBOLS

-   -   A12, A11, A1, A2, A3, and A4: mobile station apparatus    -   B: base station    -   a1: transmission and reception apparatus    -   a101, a201, and a301-i: transmission and reception common        antenna    -   a102, a202, and a302-i: antenna duplexer    -   a11, a21, and a31-i: radio receiver    -   a12, a22-1, and a32-il: quadrature demodulator    -   a13, a23-1, and a33-il: baseband demodulator    -   a14, a24-k, and a34-jk: baseband modulator    -   a15, a25-k, and a35-jk: quadrature modulator    -   a16, a26, and a36-j: radio transmitter    -   A102, A202, A302, and A402 a: controller    -   A103: assignment information storing unit    -   A104: transmission and reception apparatus configuration        information storing unit    -   A105, A205, A305, and A405: ASN encoder    -   A106: RRC message generator    -   B101: transmission and reception apparatus    -   B102: controller    -   B103: assignment information storing unit    -   A207: category information storing unit

1. A mobile station apparatus comprising: generation circuitryconfigured to generate a radio resource control message including mobilestation apparatus capability information; and transmission circuitryconfigured to transmit the radio resource control message to a basestation apparatus, wherein the mobile station apparatus capabilityinformation includes a frequency band number and first to thirdindicators, the first and second indicators are selected from aplurality of indicators, the first indicator is used for uplink, thesecond indicator is used for downlink, the first and second indicatorsare associated with the frequency band number, and the third indicatorindicates capability of frequencies for simultaneous transmission andreception.
 2. A method for a mobile station apparatus, comprising:generating a radio resource control message including mobile stationapparatus capability information; and transmitting the radio resourcecontrol message to a base station apparatus, wherein the mobile stationapparatus capability information includes a frequency band number andfirst to third indicators, the first and second indicators are selectedfrom a plurality of indicators, the first indicator is used for uplink,the second indicator is used for downlink, the first and secondindicators are associated with the frequency band number, and the thirdindicator indicates capability of frequencies for simultaneoustransmission and reception.
 3. A base station apparatus comprising:reception circuitry configured to receive from a mobile stationapparatus, a radio resource control message including mobile stationapparatus capability information; and control circuitry configured toallocate to the mobile station apparatus, one or more component carriersto be used for communication, based on the mobile station apparatuscapability information, wherein the mobile station apparatus capabilityinformation includes a frequency band number and first to thirdindicators, the first and second indicators are selected from aplurality of indicators, the first indicator is used for uplink, thesecond indicator is used for downlink, the first and second indicatorsare associated with the frequency band number, and the third indicatorindicates capability of frequencies for simultaneous transmission andreception.